The Pentair Rainbow 300‑29X (R171070) is a commercial-grade, off‑line automatic feeder offering high-capacity, precise chemical delivery. Hold more tablets, treat more water, and reduce refills.

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Key Features:

• Holds up to 29 large or 237 small 1" trichlor/bromine tablets

• Dispenses approximately 8.5 lbs per day for extended sanitizer delivery

• Treats pools or spas in the 80,000–322,000 gallon range 

• Heavy-duty ½" control valve and tubing for optimized flow and erosion

• Fully enclosed, off‑line design prevents escaping gases and avoids special venting requirements 

• NSF-listed with up to 50 PSI maximum operating pressure 

• Includes all necessary plumbing connections; unions not included

• Compact yet robust—perfect for high-demand commercial or residential setups

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Product Overview:
The Pentair Rainbow 300‑29X Feeder (R171070) brings commercial-quality performance to pool sanitation. With a durable ½" control valve and tubing system, it delivers consistent chemical feed—up to 8.5 lbs per day—making it ideal for large-scale applications. The closed-loop, off‑line design ensures safety and efficiency by eliminating venting issues and gas escape. Its rugged build and commercial-grade components mean long-term reliability, while the substantial tablet capacity cuts down maintenance frequency.