Rainbow high capacity feeders are one of the easiest ways to sanitize large residential and commercial swimming pools using either chlorine or bromine slow dissolve tablets. These heavy duty, high capacity feeders provide automatic sanitisation for pools up to 658,500 gallons. They are designed for off-line plumbing installations using 1" PVC pipe and are available in three sizes to fit a variety of pool applications.


  • 300 and 320 series filters available in clear amber for easy tablet level monitoring
  • Completely enclosed system – no special venting required
  • No escaping gases
  • 345kPa / 50psi maximum operating pressure

In-Line Feeder

  • 320 Series. For permanent installation in return line of new or existing pools or spas. Installs in return line on pressure side of pump downstream of all equipment. Standard with 2” slip PVC fittings and adapters for 1-1/2”. 

Off-Line Feeders

  • 300 Series. Retrofits into existing pools or spas. Operates on pressure side of pump. Uses 1/4”. feeder hoses, control valve and fittings.
  • 1-Year full replacement warranty.




300 / 320 Brochure

Manual - 300-29X Commercial

Manual - 320

Sizing Chart