Best Chlorine Feeders for Pools: Top in-Line and Floating Options
Choosing the right chlorine feeder helps maintain clean, balanced pool water with minimal effort. This guide reviews five top feeders—covering inline, in-line, and floating designs—so American pool owners can pick the best option for inground and above-ground setups. Each product features adjustable release, compatibility notes, and practical installation details to support steady chlorine dispersion.
| Product | Type | Key Benefit |
|---|---|---|
| Poolzilla Deluxe Chlorine Feeder | In-ground/Above-ground | Adjustable collar with multiple vent options for controlled dispersion |
| Pentair Rainbow 320 | In-Line | Permanent installation in return line with standard fittings |
| Merkia Pool Chlorine Floater | Floating | Large capacity and adjustable release for even coverage |
| HUAYOUR 320 Inline Chlorinator | In-Line | Auto/matic feeder with durable ABS and fast drainage |
| Merkia 3″ Tablet Floater | Floating | 7″ diameter with adjustable balanced delivery |
Poolzilla Deluxe Chlorine Feeder
The Poolzilla Deluxe Chlorine Feeder is designed for steady chlorine delivery to ensure clear pool water. It is suitable for inground pools, above-ground pools, and spas, with an adjustable collar that controls dispersion through more than 15 vents. The 7″ tall by 7.5″ wide unit supports up to 4 tablets ranging from 1″ to 3″ in width. It offers a blue-and-white aesthetic and comes with a single chlorine feeder; tablets are not included. This feeder emphasizes consistent dosing to help maintain disinfectant levels across various pool sizes and environments.
Pentair Rainbow 320 Automatic In-Line Feeder
The Rainbow 320 in-line feeder is designed for permanent installation in the pool’s return line. It is compatible with standard 2″ slip PVC fittings and adapters for 1-1/2″ piping, enabling straightforward integration into existing plumbing. This model reduces the need for frequent manual dosing by delivering chlorine directly into the circulation system. It’s suitable for both new installations and retrofits, making it a practical choice for maintaining steady water sanitization in diverse pool setups.
Merkia Pool Chlorine Floater
The Merkia Pool Chlorine Floater is a 7.5″ diameter floating dispenser designed to deliver chlorine evenly across indoor or outdoor pools. It holds up to four 3″ chlorine or bromine tablets or sticks, offering a large capacity and longer dosing intervals. The unit emphasizes a robust ABS construction and features an adjustable release control ring to balance chlorine delivery as conditions change. It’s suited for pools that require a floating solution with simple setup and reliable performance over time.
HUAYOUR Inline Chlorinator
The HUAYOUR inline chlorine/bromine feeder is built for compatibility with Rainbow 320 inline chlorinators and related systems. It features a durable ABS body with a thickened interior and water inlet hose for longevity, minimizing oxidation and damage. Its closed-loop design supports automatic continuous dosing, suitable for both underground and above-ground pools as well as spa pools. An upgraded drainage system enhances reliability and ease of maintenance, helping keep water chemistry stable with less manual oversight.
U.S. Pool Supply Floating Chlorine Dispenser
The U.S. Pool Supply Floating Chlorine Dispenser is a 7″ diameter floating unit that collapses to facilitate storage. It holds up to 3 pounds of 1″ or 3″ tablets or bromine tablets and includes an adjustable control ring for balanced chemical delivery. The design emphasizes portability and simplicity, making it a practical option for smaller or seasonal pools where a floating feeder can deliver consistent sanitization without permanent installation.
R171016 Pool Chlorinator (XHHEZQ) Compatible
The R171016-compatible feeder from XHHEZQ emphasizes reliability for Pentair Rainbow 300-style systems, offering upgraded control valve and base stabilization for larger pool volumes (up to 72,000 gallons). The unit is crafted from high-density ABS and aims to lower manual handling by automatically dosing chlorine or bromine as needed. It supports offline operation and is positioned as a robust option for medium to large residential pools seeking dependable automatic chlorination.
Buying Guide: Key Purchase Considerations
- Pool type and plumbing: Inline feeders are ideal for fixed installations in return lines, while floating dispensers suit above-ground and variable setups. Assess your pool size and plumbing compatibility when choosing between inline and floating models.
- Tablet size and capacity: Most feeders accommodate 3″ or 1″ tablets. Consider how often you want to refill based on the capacity and release rate. Larger or adjustable units reduce frequency of maintenance.
- Release control: Adjustable collars or control rings enable fine-tuning of chlorine dispersion. This helps prevent over- or under-dosing and supports consistent water chemistry.
- Durability and materials: ABS construction and weather-resistant finishes extend life in outdoor environments. Look for corrosion resistance and easy maintenance features, especially for in-line designs exposed to water flow.
- Installation and compatibility: Ensure the feeder fits your return line size (commonly 1-1/2″ or 2″), and verify compatibility with your existing chlorine or bromine system. Some units are designed specifically for Rainbow 320 or Pentair Rainbow systems.
- Maintenance needs: Consider models with fast drainage, easy part replacement, and clear indicators for when tablets are low. Floating feeders require attention to tablet balance and corrosion over time.