Pool Maintenance · Pool Equipment Reviews

Best Pentair R171218 Rainbow 320C Automatic In Line Chlorine Bromine Feeder
of 2026 — Pool Maintenance Equipment Compared by Practical Fit

James Carter Verified

Product review editor · TopRatedPoolCleaner editorial

Updated 2026-09-20 · Pool Maintenance

This analysis compares product specifications and buyer feedback to identify the most reliable pool chlorination solutions. The Upgraded R171096 Pool Chlorinator emerges as a top contender for maintaining water chemistry effectively.

Maintaining proper chemical balance in your pool requires reliable equipment that integrates seamlessly with existing plumbing systems. Selecting the right feeder ensures consistent sanitation and long-term water clarity for your swimming environment.

Quick take: Our review focuses on identifying units that offer the best compatibility with the pentair r171218 rainbow 320c automatic in line chlorine bromine feeder standards. See our top pick on Amazon →

Quick navigation

Jump to a pick

Tap a badge to scroll to that product — start with #1 for the default buy.

Best Overall Upgraded R171096 Pool Chlorinator Best Budget R171016 Rainbow 300 Automatic Pool and Spa Feeder Best Upgrade Upgraded 320 Pool Chlorinator Best Versatility 320 Pool Chlorinator Compatible with pentair Rainbow Best Value R171096 Rainbow 320 Automatic in-Line Feeder

Our #1 Top Pick

#1 Best Overall

Upgraded R171096 Pool Chlorinator, 320 Automatic in-Line Chlorine/Bromine Feeder Compatible with Rainbow 320, Fits 6500-70000 Gallon Inground Above Ground Pools Spas Hot Tubs with 2” & 1.5” Adapters

The Upgraded R171096 Pool Chlorinator serves as a robust replacement for the pentair r171218 rainbow 320c automatic in line chlorine bromine feeder. Designed for versatility, this unit aims to simplify chemical distribution for both inground and above ground pools, focusing on broad compatibility and ease of integration for standard plumbing setups.

This chlorinator is engineered to handle substantial volumes, specifically catering to pools ranging from 6500 to 70000 gallons. By incorporating adapters for both 2-inch and 1.5-inch piping, it provides a flexible solution for various plumbing configurations common in residential pool systems. The automated nature of this inline feeder allows for a more consistent release of chlorine or bromine, which helps in maintaining clearer water without the constant manual effort associated with floating dispensers. While the unit claims to be a direct alternative to established Rainbow 320 components, potential buyers should verify the specific threading and sealing requirements of their existing return lines before committing to this hardware upgrade to ensure a secure fit.

Practical fit

The primary advantage of this model is its inclusion of multiple adapters, which addresses the most common installation hurdle: plumbing size mismatches. Because it functions as an inline component, it requires a permanent installation into the pool return line. Users should carefully measure their available space on the return pipe to ensure the canister fits comfortably without putting undue stress on the PVC plumbing. Before installation, confirm the orientation of your current flow path, as the feeder relies on pressure differentials to function. If your plumbing is cramped or lacks a straight run, you may need additional fittings to accommodate the housing correctly.

Tradeoffs and ownership

Ownership of this feeder involves balancing the convenience of automated dosing with the necessity of regular maintenance. Like the pentair r171218 rainbow 320c automatic in line chlorine bromine feeder, this unit requires periodic cleaning of the internal components to prevent mineral buildup and ensure the flow control valve remains responsive. While the build is marketed as durable, users should inspect the O-rings and lid assembly frequently for signs of wear. If you notice leaks or a drop in chemical output, check the internal check valve for clogs. Owners must also be diligent about monitoring their pool chemistry levels manually to calibrate the feeder setting.

Best for: Pool owners seeking a versatile, high-capacity inline chlorinator compatible with standard 1.5-inch and 2-inch plumbing systems.

Inground poolsChlorine feederEasy installDurable

Compatibility

9.0

Effectiveness

8.5

Ease of Use

8.0

Durability

8.0

Value

8.5

Pros

Includes versatile plumbing size adapters
Supports a wide gallon capacity range
Automates daily chemical distribution processes
Compatible with chlorine and bromine tablets
Simplifies maintenance compared to floating dispensers

Cons

Requires permanent plumbing line installation
May require frequent O-ring inspections
Dependent on correct flow pressure settings

Check price on Amazon →

We may earn a commission at no extra cost to you.

The Full Ranking

More strong options by use case

Best Budget

R171016 Rainbow 300 Automatic Pool and Spa Feeder

Best for: Spa and small pool owners requiring a compact, reliable, and space-efficient chemical feeder for consistent water maintenance.

The R171016 Rainbow 300 Automatic Pool and Spa Feeder is a compact, reliable solution for those needing precise chemical management. As an alternative to the pentair r171218 rainbow 320c automatic in line chlorine bromine feeder, this model focuses on efficiency for smaller systems, including hot tubs and spas.

This feeder is widely recognized for its consistent flow performance, making it a staple for owners who prioritize stability in their water chemistry. Its design is streamlined to minimize the footprint within the pool equipment pad, which is often a constraint for spa owners or those with limited space. Because it is specifically built for reliability, it serves as an excellent entry point for those transitioning away from manual chemical dosing. Prospective buyers should verify if their current setup supports an offline installation, as the Rainbow 300 series is often configured to work alongside existing plumbing rather than directly in the main line, which can influence how chemicals are dispersed throughout the water cycle.

Practical fit

The compact nature of this feeder makes it an ideal candidate for tight equipment pads where space is at a premium. Unlike inline feeders that must be spliced into the main return pipe, this model offers a more flexible placement strategy. This is particularly beneficial for spa owners who need to integrate chemical management without significantly altering existing plumbing layouts. When installing, ensure that the feeder is positioned at a height that allows for proper gravity-assisted drainage and easy access to the lid. You should verify that your pump system provides the necessary pressure to drive water through the feeder effectively.

Tradeoffs and ownership

Owning a Rainbow 300 involves a commitment to regular monitoring of the control valve. While it is highly reliable, the flow rate can be influenced by the pressure of your pool or spa pump. If you upgrade your pump or change your filter media, you may need to recalibrate the feeder dial to maintain the desired chemical levels. Maintenance is relatively straightforward, but users should be prepared to clear the intake and output lines periodically to prevent blockages. Because it is a smaller unit, tablet capacity is more limited than in larger inline feeders, requiring more frequent refills during peak swimming or soaking seasons.

Pros

Compact footprint for tight spaces
Highly reliable flow control mechanism
Ideal for both pool and spa
Consistent chemical output performance
Easier to manage than large-scale units

Cons

Smaller tablet capacity requires refills
Flow sensitive to pump pressure changes
Needs periodic line blockage checks

Budget friendly
Reliable flow
Spa compatible
Consistent

Check price on Amazon

Best Upgrade

Upgraded 320 Pool Chlorinator Automatic Chlorine/Bromine Inline Feeder Compatible with pentair Rainbow 320 Chlorinator, R171096 Feeder for Various Online and Offline Pools and spa Centers

Best for: Owners of existing Rainbow 320 systems looking for an upgraded, automated replacement that offers flexible installation options.

The Upgraded 320 Pool Chlorinator provides a modern alternative to the pentair r171218 rainbow 320c automatic in line chlorine bromine feeder. This unit is designed for those looking to improve their existing pool maintenance routine with a more automated, efficient approach to chemical distribution in various pool centers.

This chlorinator is built to offer a high degree of versatility, fitting into both online and offline plumbing configurations. By focusing on an automated delivery system, it aims to reduce the manual labor required to keep pool water sanitized. It is designed to be compatible with standard Rainbow 320 components, which can simplify the replacement process for existing owners of similar systems. However, users should be aware that while it offers a high degree of automation, the effectiveness of the unit is heavily dependent on the quality of the installation and the maintenance of the internal flow control valve. Always check your plumbing diameter before purchase to ensure compatibility.

Practical fit

The design of this feeder emphasizes ease of integration, particularly for those already familiar with the Rainbow 320 style of chlorinators. Its ability to function in various plumbing setups makes it a strong choice for pools that have undergone modifications or have non-standard return line layouts. During installation, pay close attention to the seal on the lid; a secure, airtight closure is essential for maintaining the pressure required for the unit to function correctly. If your return line is older or prone to vibration, consider adding extra support brackets to ensure the chlorinator housing remains stable and leak-free throughout the season.

Tradeoffs and ownership

The main tradeoff with this upgraded model is the need for consistent monitoring of the chemical output settings. While it automates the process, the dial control can be sensitive to fluctuations in water temperature and pump pressure. Owners should plan to test their water chemistry at least weekly to ensure the feeder is delivering the correct amount of chlorine or bromine. Maintenance tasks include inspecting the internal tablet chamber for debris and ensuring the check valve is not stuck. If you notice the feeder is not emptying properly, it is usually a sign that the flow path needs a quick cleaning.

Pros

Compatible with standard Rainbow 320 parts
Versatile online and offline installation
Automated delivery reduces manual effort
Efficient chemical distribution design
Suitable for various pool and spa

Cons

Dial control can be temperature sensitive
Requires airtight lid for proper function
Needs weekly water chemistry validation

Versatile
Automated
Pool maintenance
Efficient

Check price on Amazon

Best Versatility

320 Pool Chlorinator Compatible with pentair Rainbow R171096 Automatic Inline Chlorine/Bromine Feeder, Can Handle Up to 70000 Gallons of Water

Best for: Owners of large residential swimming pools requiring a high-capacity, automated chlorine or bromine delivery system.

The 320 Pool Chlorinator compatible with the Pentair R171218 Rainbow 320C inline feeder serves as a robust solution for large-scale sanitation. Designed to handle up to 70,000 gallons, this unit offers significant capacity for pool owners seeking a consistent, automated method for maintaining chlorine or bromine levels throughout the season.

This inline feeder is engineered for those who prioritize high-volume chemical distribution. By integrating directly into existing plumbing, it provides a seamless flow of treated water, reducing the need for manual tablet dosing. The design is intended to work as a direct replacement for the Pentair Rainbow system, offering a familiar interface for those already accustomed to this style of hardware. Because this is a compatible model rather than an original manufacturer part, prospective buyers should verify the specific threading and pipe diameter requirements of their current plumbing setup before installation to ensure a leak-free, secure connection that matches their specific pool configuration.

Practical fit

For owners of large pools, the primary appeal is the substantial capacity, which minimizes the frequency of refilling chemical tablets. When considering this unit, users must confirm that their existing PVC plumbing layout can accommodate the footprint of the feeder. Since it installs inline, proper clearance is essential for both the physical housing and the lid access. Buyers should carefully inspect their current return line to see if the dimensions align with this model's inlet and outlet ports. If the existing pipe configuration is tight or non-standard, additional plumbing modifications may be necessary to achieve a proper, stable fit.

Tradeoffs and ownership

Ownership of this feeder involves balancing convenience with the reality of chemical maintenance. While the automated delivery system is effective, the reliance on tablet-based chemistry requires regular monitoring of the feeder's internal erosion levels. Owners should be prepared to periodically clean the internal components to prevent buildup that might impede water flow. Because this is a compatible unit, users should also keep a close eye on the seals and O-rings during the first few weeks of operation to ensure no degradation occurs. Those who prefer a low-maintenance, set-it-and-forget-it solution should still plan for routine inspections of the feeder housing.

Pros

High-capacity chemical storage
Automated inline distribution
Compatible with Rainbow systems
Reduces manual dosing frequency
Supports large pool volumes

Cons

Requires plumbing verification
Needs regular seal inspection
Compatibility varies by setup

High capacity
Inline feeder
Pool maintenance
Large volume

Check price on Amazon

Best Value

R171096 Rainbow 320 Automatic in-Line Chlorine/Bromine Feeder

Best for: Pool owners who prefer a time-tested, reliable, and simple manual-adjustment chemical feeder for daily sanitation.

The R171096 Rainbow 320 automatic inline feeder remains a classic choice for pool owners who value a straightforward, proven design for chlorine and bromine management. Its enduring popularity stems from a simple, reliable mechanism that integrates easily into standard pool plumbing to maintain consistent water sanitation levels.

This feeder is widely recognized for its longevity and uncomplicated approach to pool care. By utilizing a gravity-fed or pressure-side flow through chemical tablets, it provides a steady release of sanitizer, which helps in preventing algae growth and maintaining water clarity. The classic design is intuitive, allowing for easier operation compared to more complex, digital alternatives. For those replacing an aging unit, this model offers a familiar path, though buyers should always cross-reference their specific plumbing diameter and existing return line flow rates to ensure this classic hardware will integrate perfectly with their current pool equipment pad and overall hydraulic system architecture.

Practical fit

The physical installation of this feeder is generally straightforward for those with basic plumbing knowledge, but it is not universal. The unit is designed for standard inline placement, so prospective buyers must measure their available space on the return line. It is critical to confirm that the feeder will not obstruct other components like heaters or pumps. Before purchasing, verify that the inlet and outlet connections match your existing pipe size. If your pool plumbing is older or utilizes non-standard fittings, you may need to source additional adapters to ensure the feeder is securely mounted and operating within the correct pressure range.

Tradeoffs and ownership

Operating this classic feeder is a lesson in consistent maintenance. While the design is simple, the efficacy depends entirely on the user's ability to manage tablet levels and flow control settings. Over time, the internal dial may become stiff due to chemical exposure, so owners should be prepared to lubricate the O-rings and threads periodically. Additionally, because it is an inline system, the feeder is subject to the same pressure as the return line, making it vital to check for small leaks at the lid periodically. Those who prioritize longevity over modern features will find this a reliable, long-term asset.

Pros

Proven classic design
Simple to operate
Reliable chemical delivery
Durable construction materials
Easy to find replacements

Cons

Requires manual flow adjustments
O-rings need periodic maintenance
Limited to tablet-based chemistry

Value
Classic design
Pool care
Reliable

Check price on Amazon

Match the pool

Which option fits your plan?

🏠

Large Residential Pools

Pick: Upgraded R171096 Pool Chlorinator

For owners of expansive inground pools up to 70,000 gallons, this unit offers the high-capacity chemical delivery needed to maintain consistent sanitation levels. Its design integrates directly into existing plumbing lines, making it an efficient choice for those seeking to automate their daily water treatment routines without constant manual tablet dosing or complex chemical handling during the peak summer swimming season.

🛁

Compact Spa Integration

Pick: R171016 Rainbow 300 Automatic Pool and Spa Feeder

Ideal for spa and hot tub owners who require precise, reliable flow control. This model is engineered to handle the unique volume requirements of smaller water bodies. Its compact footprint ensures it fits into tighter equipment pads, providing a consistent release of chlorine or bromine that keeps spa water clear and safe while minimizing the need for frequent manual adjustments to the chemical levels.

🔄

Direct System Replacement

Pick: Upgraded 320 Pool Chlorinator

When your existing Pentair Rainbow 320 system reaches the end of its functional life, this compatible unit serves as a seamless replacement. It allows users to swap out aging hardware without reconfiguring their entire plumbing setup. This is the perfect scenario for homeowners who want to restore their pool's automated sanitation capabilities quickly using a familiar, time-tested inline feeder design for maintenance.

🔧

Versatile Plumbing Setups

Pick: 320 Pool Chlorinator Compatible with pentair Rainbow

Designed for versatility, this feeder accommodates various plumbing configurations, including both 1.5-inch and 2-inch pipes. If your pool equipment layout is non-standard or features mixed pipe sizes, this unit provides the necessary flexibility to ensure a secure, leak-free installation. It is a robust solution for homeowners who need a reliable, high-capacity inline chlorinator that adapts to the specific constraints of their existing filtration plumbing.

💰

Budget-Conscious Maintenance

Pick: R171096 Rainbow 320 Automatic in-Line Feeder

For pool owners prioritizing value without sacrificing essential functionality, this classic design offers a straightforward approach to pool care. It provides the core benefits of an automatic feeder at a price point that respects a tighter budget. It is a reliable, no-frills option for those who want to automate their sanitation process effectively while keeping overall equipment investment costs as low as possible.

🌊

High-Volume Water Treatment

Pick: 320 Pool Chlorinator Compatible with pentair Rainbow

When dealing with high-volume water circulation, this powerful inline feeder ensures that chlorine or bromine is distributed evenly throughout the system. It is specifically suited for pools that see heavy usage or have high sanitation demands. By maintaining a constant flow, it helps prevent algae growth and keeps water chemistry balanced, making it a dependable choice for demanding, high-traffic residential pool environments.

Buying guide

What to look for

Confirming Plumbing Compatibility

Before purchasing, verify the diameter of your existing return plumbing. Most feeders are designed for 1.5-inch or 2-inch pipes. Check if your system requires specific adapters or if the unit includes them. A mismatch here will prevent a secure installation and lead to leaks. Always measure your pipe exterior and consult your current equipment manual to ensure the feeder's inlet and outlet ports align with your existing configuration.

Assessing Pool Volume Needs

Consider the total gallon capacity of your pool or spa. Ensure the feeder you select is rated to handle your specific volume. While some units are versatile, using an undersized feeder for a large pool may result in inadequate sanitation, while an oversized unit might be difficult to calibrate for a small spa. Look for manufacturer specifications regarding gallon capacity to ensure optimal chemical delivery rates.

Evaluating Material Durability

Pool chemicals are highly corrosive. Look for feeders constructed from high-quality, chemical-resistant plastics designed to withstand constant exposure to chlorine or bromine. Check user feedback regarding the longevity of the housing and the integrity of the threads. A feeder that becomes brittle or develops leaks after a single season will ultimately cost more in replacements and potential water damage to your equipment pad area.

Checking Installation Complexity

Assess your comfort level with plumbing tasks. Inline feeders require cutting into your return line, which involves PVC cutting, priming, and gluing. If you are not confident in your ability to create a water-tight seal, you may need to budget for professional installation. Ensure the product listing clearly states if necessary fittings or installation hardware are included to avoid mid-project delays and extra trips to the store.

Reviewing Flow Control Precision

The ability to fine-tune chemical output is critical for maintaining balanced water chemistry. Look for models with a dial or valve that offers incremental adjustments. A feeder with a loose or imprecise control valve will make it difficult to maintain stable sanitizer levels, leading to frequent testing and manual correction. Consistent flow control is essential for protecting your pool surfaces and equipment from corrosion.

Verifying Chemical Compatibility

Ensure the feeder is explicitly compatible with the type of sanitizer you intend to use. While many units handle both chlorine and bromine, some are specific or require different internal setups. Never mix chemicals within the feeder, as this can cause dangerous reactions. Check the manufacturer's documentation to confirm that the unit is designed to handle the specific size and type of tablets you plan to use.

Considering Replacement Part Availability

Even the best feeders will eventually require replacement parts like O-rings, lids, or control valves. Before buying, check if the brand or model has a reputation for supporting its products with readily available replacement components. Choosing a popular, standard design often makes it easier to find parts locally or online, extending the life of your investment significantly compared to proprietary or obscure models.

Ownership guide

Setup, use, and maintenance

Regular Visual Inspection

Periodically inspect the feeder body and all associated plumbing connections for signs of wear, cracking, or leaks. Since these units operate under pressure, any hairline fractures can compromise safety and efficiency. Always check the lid O-ring to ensure it remains lubricated and free of debris, as a degraded seal can lead to air leaks or chemical gas escape. If you notice any discoloration or brittleness in the plastic housing, consider a replacement immediately to prevent potential failure during operation.

Cleaning Mineral Deposits

Over time, calcium and mineral buildup can accumulate inside the feeder, potentially obstructing the flow of water or the chemical erosion process. During your seasonal pool opening or closing, disassemble the unit carefully to clean the interior chamber. Use a soft brush and water to clear away residue, but avoid harsh chemicals that could react with residual chlorine or bromine. Keeping the internal components free of scale ensures that the chemical output remains consistent and that the control valve operates smoothly without binding or sticking.

O-Ring Lubrication Protocols

The O-ring is the primary barrier preventing chemical leaks from the feeder lid. To maintain an airtight seal, apply a thin layer of silicone-based lubricant to the O-ring at least once per season or whenever the lid is removed for refilling. Avoid petroleum-based lubricants, which can degrade the rubber material and lead to premature failure. A properly lubricated seal makes the lid easier to tighten and remove, reducing the physical strain on the plastic threads and extending the overall lifespan of the feeder assembly.

Valve Adjustment Maintenance

The control valve is the heart of your feeder's output regulation. Periodically cycle the valve from fully open to fully closed to ensure it moves freely. If the valve feels stiff, it may indicate internal debris or mineral buildup. Do not force the valve if it meets resistance; instead, flush the unit with fresh water to clear obstructions. Regularly monitoring the valve position helps you maintain precise control over your pool's sanitation levels, preventing both under-chlorination and the corrosive effects of over-chlorination on your pool equipment and surfaces.

Winterization and Storage

If you live in a climate where freezing occurs, proper winterization is essential to prevent the feeder housing from cracking. Drain the unit completely by removing the drain plug. It is often recommended to remove the feeder assembly from the plumbing if the pool will be closed for an extended period. Store the unit in a dry, temperate location away from direct sunlight and extreme temperatures. Ensure the lid is loosely fitted to allow for airflow, which prevents moisture buildup and mold growth inside the chamber during the off-season months.

Methodology

How we evaluate

📊

Listing Analysis

We evaluate product listings by cross-referencing technical specifications, such as gallon capacity and plumbing size compatibility, against standard industry requirements. We prioritize listings that provide clear, detailed descriptions of included components and installation needs. This process helps us identify which products offer the most transparent information, allowing buyers to make informed decisions based on the actual capabilities and limitations of the equipment presented.

⭐

Consumer Feedback Patterns

Our review process involves synthesizing recurring themes from user feedback to identify common strengths and pain points. We look for patterns related to installation ease, material durability, and long-term performance consistency. By aggregating these observations, we provide a balanced view of how products perform in real-world residential settings, highlighting consistent quality markers while flagging potential issues that frequently appear in user-reported experiences over time.

🔍

Compatibility Verification

We rigorously check the stated compatibility of each feeder against common pool plumbing standards. This includes evaluating whether the units are marketed as direct replacements for industry-standard models and if they accommodate the most common pipe diameters. We emphasize products that clearly define their fitment parameters, reducing the risk of purchase errors and ensuring that the equipment integrates seamlessly into typical existing pool filtration systems.

🛠️

Maintenance Burden Assessment

We analyze the design features of each feeder to estimate the likely maintenance requirements for the owner. We look for indicators such as the accessibility of the O-ring, the ease of valve operation, and the simplicity of the winterization process. Products that feature user-friendly designs for routine cleaning and part replacement are prioritized, as these factors significantly influence the long-term satisfaction and total cost of ownership for the user.

⚖️

Value and Utility Scoring

We assess the overall value by comparing the price point against the advertised features and durability claims. We categorize products based on their specific utility, such as budget-friendliness or high-capacity performance. This methodology ensures that our recommendations cater to a wide range of user needs, from those seeking a simple, low-cost solution to those requiring robust, high-performance equipment for large or high-traffic pool environments.

FAQ

Pool Maintenance — FAQ

Can I use both chlorine and bromine in the same feeder?

No, you should never mix chlorine and bromine in the same feeder. Doing so can cause a dangerous chemical reaction that may result in fire or explosion. If you decide to switch between chlorine and bromine, you must completely disassemble, thoroughly clean, and dry the feeder to remove all traces of the previous chemical before adding the new one. It is generally recommended to dedicate a specific feeder to one type of sanitizer to avoid any risk of accidental cross-contamination and ensure the safety of your pool water and equipment.

Do I need a professional to install an inline feeder?

Installation involves cutting into your pool's return plumbing, which requires basic knowledge of PVC piping, priming, and gluing. If you are comfortable with these tasks and have the necessary tools, you can likely perform the installation yourself. However, if you are unsure about creating a leak-proof seal or if your plumbing setup is complex, hiring a professional is a wise investment. A poor installation can lead to leaks, pressure loss, or damage to your pool equipment pad. Always follow the manufacturer's instructions and local building codes when installing any pool equipment.

How often should I check the chemical levels in the feeder?

The frequency for refilling your feeder depends on your pool's size, water temperature, usage patterns, and the flow rate setting. You should establish a regular schedule to check the tablet levels, typically once a week, to ensure the feeder does not run empty. During hot weather or periods of high pool usage, you may need to check more frequently. Always test your pool water chemistry independently of the feeder output to ensure that your sanitizer levels remain within the recommended range for safe swimming.

What should I do if the feeder lid is stuck?

If the lid is difficult to remove, do not use excessive force or metal tools, as this can crack the plastic housing. First, ensure the pump is turned off and the system pressure is fully relieved. Sometimes, the O-ring can become dry or stuck due to chemical residue. Try gently tapping the lid or using a dedicated strap wrench designed for pool equipment. If it remains stuck, check for mineral buildup around the threads. Regular lubrication of the O-ring and cleaning the threads during routine maintenance can prevent this issue from recurring in the future.

Is it safe to open the feeder while the pump is running?

No, you should never open the feeder while the circulation pump is running. The feeder operates under pressure, and opening it during operation can cause a dangerous spray of chlorinated water and gas to escape, which can cause severe skin, eye, or respiratory irritation. Always turn off the pool pump, close the inlet and outlet valves if applicable, and allow the pressure to dissipate completely before attempting to open the lid for any reason. Safety should always be your top priority when handling pool chemicals and pressurized equipment.

Can I use this feeder for a salt water pool?

Most inline feeders are designed for use with chlorine or bromine tablets and are not intended for salt water chlorine generator systems. If you have a salt water pool, your salt cell is responsible for generating chlorine, and adding an inline feeder is typically unnecessary and potentially redundant. Always consult your pool equipment manual or a professional pool technician before adding supplemental chemical feeders to a salt water system, as improper chemical balancing can damage your salt cell or other sensitive pool components.

What causes the feeder to leak at the pipe connections?

Leaks at the pipe connections are usually caused by improper gluing during installation, stress on the pipes, or the use of incorrect fittings. If you notice a leak, first ensure that all connections are tightened properly. If the leak persists, you may need to disassemble the connection, clean the surfaces, and re-glue the PVC joints using appropriate professional-grade pool cement. If the housing itself is cracked, the unit will likely need to be replaced. Always ensure that the feeder is properly supported to prevent the weight of the unit from putting undue stress on your plumbing lines.

How do I determine the correct setting for the control valve?

The correct valve setting is determined by testing your pool water regularly. Start with a conservative setting as recommended in the manual, then wait 24 to 48 hours to test your chlorine or bromine levels. If the levels are too low, slightly increase the valve opening. If they are too high, decrease it. Because every pool has different chemical demands based on sunlight, temperature, and bather load, there is no single 'correct' setting. You must monitor your water chemistry frequently and adjust the valve incrementally until you reach a stable, safe balance.

Final verdict

Bottom Line

Selecting the right inline feeder requires a careful balance of your pool's specific volume requirements and your plumbing configuration. Models like the R171096 offer a reliable, high-capacity solution for larger pools, while more compact units serve smaller spas effectively. Always prioritize durable, chemical-resistant construction and ensure you have the necessary skills or professional support to handle the plumbing installation safely and correctly.

Effective ownership of these devices hinges on consistent maintenance, including regular O-ring lubrication and valve inspection. By staying vigilant about water chemistry and following manufacturer guidelines for chemical handling, you can ensure your pool remains safe and clear throughout the season. Remember that these feeders are tools for automation, not replacements for regular water testing and proactive equipment care to prevent long-term damage.

Back to #1 pick ↑