A bromine feeder is an automatic, hassle-free dispensing system designed to gradually release bromine into your spa or pool. This innovative device ensures continuous, even sanitation without the need for constant manual dosing. It saves you time while maintaining perfectly balanced water.
If you are tired of measuring out chemicals every time you want to use your hot tub, a bromine feeder is the ultimate upgrade to your maintenance routine. Because bromine is the preferred sanitizer for high-heat environments, keeping a steady, reliable level in the water is critical to preventing bacteria growth and cloudy water. A feeder takes the guesswork out of this process completely.
The Two Types of Bromine Feeders
Bromine feeders come in two distinct styles, each designed for a different type of setup and budget.
1. Floating Dispensers
This is the most common and inexpensive option for residential hot tubs. It is a simple plastic device that bobs on the surface of the water. You load the hollow center with 1-inch bromine tablets and adjust a twisting collar at the base to expose or cover the vents. As the water flows through the open vents, the tablets slowly dissolve. It requires zero installation and immediately provides a steady stream of sanitizer.
2. In-Line (Automatic) Chlorinators/Brominators
An in-line feeder is a piece of hard plumbing permanently installed into your equipment pad, sitting just after your pool or spa filter. It holds a much larger capacity of bromine tablets in a sealed, pressurized chamber. As the main pump circulates water back to the pool or spa, a controlled amount of water is diverted through this chamber, dissolving the tablets. You control the exact feed rate using a precision dial on the outside of the unit. This offers a highly accurate, hands-off approach.
How to Dial In Your Bromine Feeder
Regardless of which type of feeder you use, you cannot just fill it with tablets and walk away. You must calibrate it to your specific water volume and bather load.
- Establish a Baseline: Before relying on the feeder, balance your pH and add a base dose of granular sodium bromide to establish a residual level in the water.
- Load the Tablets: Fill the feeder to the recommended capacity with 1-inch bromine tabs.
- Start Low: Set the dial or the physical vents to a low or medium setting (e.g., setting 2 out of 5). Let the water circulate for 24 hours.
- Test and Adjust: Test the water the next day. If your bromine level is below the ideal 3.0 to 5.0 parts per million (ppm) range, open the dial slightly. If it is too high, dial it back. Repeat this daily testing until the feeder consistently maintains the perfect level.
For a deeper dive into establishing your baseline and understanding these chemical readings, check out the ultimate guide to understanding pool chemicals.
Safety Rules for Using a Feeder
Bromine is highly reactive, and mixing the wrong chemicals inside a concentrated feeder chamber can cause a dangerous explosion or fire.
- Never Mix Chemicals: If a feeder was previously used for chlorine tablets (Trichlor), you cannot simply switch it to bromine tablets without thoroughly neutralizing and cleaning the entire chamber. The chemical reaction between concentrated chlorine and bromine is highly volatile.
- Use the Right Tablets: Only use compressed 1-inch bromine tablets in a hot tub feeder. Never pour granular shock or liquid chemicals directly into an automatic dispensing chamber.