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Home Pentair Rainbow 300C Automatic Off-Line Chlorine Feeder | Clear Amber | R171022
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into mid-2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Pentair Rainbow 300C Automatic Off-Line Chlorine Feeder | Clear Amber | R171022

Pentair Rainbow 300C Automatic Off-Line Chlorine Feeder | Clear Amber | R171022

Platinum Preferred Manufacturer
  • Amber Body. with See Through Amber Body
  • Completely enclosed system - no special venting required. No escaping gases
  • All Rainbow Feeders are NSF Listed
  • 50 PSI maximum operating pressure
Q & A
Rainbow Automatic Chlorine/Bromine Feeders 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 or sticks. These heavy-duty, high capacity feeders provide automatic sanitization for pools up to 332,000 gallons.
300 Series. Retrofits into existing pools or spas. Operates on pressure side of pump. Uses 1/4 in. feeder hoses, control valve and fittings.
Holds 11 large or 98 small tablets. Treats 12000 to 48000 gallons.

Brand: Pentair
Q & A
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Browse 4 questions Browse 4 questions and 3 answers
Does it come with all necessary fittings and hoses?
Kenneth L on May 1, 2020
Can this be used with the Intellichlor or is it intended to be used in lieu of it?
John R on Apr 29, 2018
Pentair Rainbow 300C Automatic Off-Line Chlorine Feeder | Clear Amber | R171022
Pentair Rainbow 300C Automatic Off-Line Chlorine Feeder | Clear Amber | R171022
Pentair Intellichlor Salt Generator Replacement Cell | 60000 Gallons IC60P | EC-521105
Pentair Intellichlor Salt Generator Replacement Cell | 60000 Gallons IC60P | EC-521105
BEST ANSWER: It is supposed to be used in lieu of intellichlor. The benefit of a intellichlor is that you will not need to use tablets as the salt cell (intellichlor) will produce the chlorine for you. You can add as part of the equipment in case the intellichlor is not operating properly. Would recommend the inline rainbow 280 and have it be the last part the return line and a level below the salt cell as so it does not have chlorine residue come back into the salt cell when the pool is not running.

Payne Pool Professionals
What is the difference between off-line and in-line?
A shopper on Jul 29, 2016
BEST ANSWER: The difference is how they are plumbed into your system. The inline gets plumbed into the system where the offline is great for adding to existing equipment.
i need to know the width of the base so i can make sure I have a location to put it????
A shopper on Jan 12, 2017
5.0 / 5.0
1 Review
5 Stars
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3 Stars
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1 Star
Rated 5 out of 5
Pentair Rainbow 300C
Installation was not difficult. So far, the chlorinator is operating flawlessly.
July 28, 2021
6 months ago
You've always been able to count on the quality and long service life of Pentair products. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*.
While the majority of Pentair products are covered by a sixty- (60) day warranty, a select number of products qualify for extended warranty coverage.
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.
TradeGrade products must be purchased from a retail store (brick & mortar), pool builder or pool service company to receive a one-year, two-year or three-year warranty. If purchased online will only receive a sixty-day limited warranty. View the list of TradeGrade Products.
Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 11/19/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

 Adobe Acrobat PDF Warranty Information
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Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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