Pentair R171096 Rainbow 320 Automatic in-Line Chlorine/Bromine Feeder
Best for: Budget-conscious pool owners seeking a compact, versatile in-line feeder compatible with either chlorine or bromine tablets.
The Pentair R171096 Rainbow 320 is a compact, budget-friendly automatic pool chemical feeder that offers versatile sanitation options. Designed for in-line installation, this unit supports both chlorine and bromine, providing a flexible solution for pool owners who prefer a smaller footprint without sacrificing the convenience of automated water chemistry management.
For those mindful of costs and space, the Rainbow 320 serves as a functional entry point into automated pool care. Its compact design allows it to fit into tighter equipment pads where larger, bulkier feeders might be impractical. The unit operates by allowing water to circulate through the chemical reservoir, slowly eroding tablets to maintain the desired sanitizer levels. Because it is compatible with both chlorine and bromine, it offers a level of flexibility that many users appreciate. Before purchasing, verify that your pool's specific chemical requirements align with the manufacturer's guidance regarding tablet type and the necessary flow adjustments required for safe operation.
Practical fit
The Rainbow 320 is designed for in-line plumbing, meaning it becomes a fixed part of your pool's return circuit. Its smaller size is a significant advantage for installations where space is at a premium. However, the compact nature means you will likely need to refill the chemical chamber more frequently than with high-capacity alternatives. Ensure your plumbing layout allows for the vertical orientation required by the device. It is wise to verify the compatibility of your existing pipe diameter with the feeder's inlet and outlet ports to avoid unnecessary adapters or complex plumbing modifications during the initial setup.
Tradeoffs and ownership
Choosing a budget-oriented feeder often involves a trade-off in total chemical volume, which translates to more frequent trips to the equipment pad for refills. Owners should establish a routine for checking the tablet levels, especially during peak swimming months when sanitizer demand is highest. The ease of adjusting the control dial is a highlight, but users should be careful not to overtighten the lid, as this can degrade the seal over time. Always clear debris from the area around the feeder to ensure easy access for routine maintenance and to prevent potential damage to the housing.
Pros
- Compact space-saving design
- Supports chlorine or bromine
- Affordable entry-level pricing
- Simple dial adjustment mechanism
- Easy to integrate in-line
Cons
- Smaller capacity requires refills
- Lid seal needs careful handling
- Not suitable for high-volume
- Budget pool gear
- Bromine compatible
- Compact feeder
- Automated sanitation