Rainbow 300 Off-line feeder - for Chlorine or Bromine.

Rainbow 300 Off-line feeder - for the automatic dosing of Chlorine or Bromine.
£172.50 (ex. VAT)
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Product information

Rainbow 300 Off-line feeder - for the automatic dosing of Chlorine or Bromine.

The efficient, easy way to sanitize you pool or spa.  The Rainbow 300 automatic chlorine/bromine feeder not only saves time. but also reduce manual handling of chemicals. They use large or small Trichlor or Bromine slow-dissolving tablets to make sanitizing your new or existing pool or spa easy and automatic.  

The 300 Off-Line Feeder installs on the pressure/return side of your filtration system using 1/4" feed hoses. 

It incorporates a control dial so that you can adjust the flow rate through the unit, and thus how much chlorine or bromine is being dosed.  You may need to adjust this over the first week or so of operating the unit, however once you find a setting that suits your pool, the only attention needed would be to top the unit up with tablets.  


  • Fully enclosed systems, no escaping fumes, no special venting required
  • Top-load design makes it easy to top up with tablets
  • Automatic dosing for your pool or spa
  • Includes pipes and fittings required for installation
  • Full instructions included
  • Canister holds either 98x 20g tablets, or 11x 200g tablets. 
  • Suitable for Swimming Pools up to 22,500 gallons
Sizing Chart - Rainbow Feeders
Feeder Model  Chemical Feeder Capacity kg (Pool Capacity Approx) Gallons (Pool Capacity Approx) m3
RA300C Bromine 2.2 20,000 90
RA300C Chlorine 2.2 40,000 181
RA320C Bromine 2.2 11,200 / 29,000* 50 / 131*
RA320C Chlorine 2.2 22,500 / 58,300* 102 / 265*

* = Bottom Feed / Top Feed

Product Data

GTIN 788379004224