Rainbow Automatic Chlorine or Bromine Off-Line Spa Feeder Model 300-19 - Double-Capacity
  • Rainbow Automatic Chlorine or Bromine Off-Line Spa Feeder Model 300-19 - Double-Capacity
Poolweb #R171056

Rainbow Automatic Chlorine or Bromine Off-Line Spa Feeder Model 300-19 - Double-Capacity

Write a Review
1 in stock
$132.62 $132.62 & ships free!
Unit price per 

Shipping Options (more)

  • Standard Shipping, Free Get it by
  • 2 Day Shipping, Get it by
  • 1 Day Shipping, Get it by

Shopper Protection

Replacement Parts

Product Information


The Rainbow Model 300-19 Off-Line Automatic Chlorine or Bromine Spa Feeder is double the capacity of the 302 and will treat spas from 13,000 to 52,000 gallons per day. This model 300-19 has a 19 inch chamber and includes a spa chamber. The feeder uses small Trichlor or Bromine slow-dissolving tablets to make sanitizing your existing spa easy and automatic. Plus, the Rainbow Model 300-19 installs easily on the pressure side of the pump, downstream of the filter and heater.

The Rainbow 300 Series will retrofit into existing spas. They not only save time, but they also reduce manual handling of chemicals. The Pentair automatic feeders feature an external fine control valve that lets you adjust the feed rate to meet specific pool or spa requirements. The check valve protects the pump and heater from back-up of highly chlorinated water.

The Rainbow Automatic Feeders are completely enclosed systems, so no escaping fumes. with the simple, trouble-free design, no venting is necessary. They are top loading which makes it very easy to add chemicals. And extensions are available to increase tablet or stick capacity, in case you are away for an extended period.

These Pentair Automatic Feeders are NSF listed for public or residential use in swimming pools, spas or hot tubs using 1 inch Trichlor tablets and when used with a flow indicating device such as Rainbow Model R172080. Output rating for Bromine is not NSF certified for 300 and 320 Series feeders.

The Series 300 off-line feeders are for retrofit installations. For more capacity in your spa feeder, see models 300-29.

Product Features

  • Off-Line Feeder for Retrofit
  • Treats 13,000-52,000 gallons per day
  • Holds 30 small tablets
  • Top-loading makes it easy to add chemicals.
  • Uses 1/4 inch feeder hoses, control valve and fittings.
Max Operating Pressure: 50 psi
  • Completely enclosed system
  • No special venting required
  • For slow dissolving tablets only

    Technical Specifications

    Product CategoryChlorinators
    Poolweb Item #R171056
    Cross Reference #Rainbow #300-19
    Shipping Weight5.0 lb

    Shipping & Returns

    Shipping Options

    Standard ShippingFreeGet it by
    2 Day ShippingGet it by
    1 Day ShippingGet it by

    Standard ground shipments may be delivered sooner depending on where you are located, and the shipping method used to ship your order. Combining multiple items onto the same order can change the delivery date and expedited shipping costs, especially if the other items are not available for immediate shipment. Transit time is calculated in business days and does not include Saturday and Sunday.

    Return Policy

    This item can be returned within 30 days of order. See return policy for details and how to place a return.

    Poolweb Guarantee

    This item qualifies for a one-year Poolweb.com guarantee. Poolweb guarantees that the item you receive will function as advertised for one year. See the Poolweb Guarantee for more details.

    We Also Recommend...

    Product Reviews

    Customer Questions