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Red Sea Coral Colors B Supplement (Potassium) - 500ml


Item #: RS22053

In Stock

Potassium complex that promote the Red colors in corals.

Coral Colors B Supplement is part of the complete range of complementary major, minor and trace element complexes which together provide the needs of corals.

Coral Colors B Supplement contains potassium and boron that are associated with many biological processes, one of them being the production of the red pigments in the soft tissue of corals.

Potassium plays an essential role in the transportation of coral nutrients within the soft tissue (including the nutrients provided by the zooxanthellae). Potassium and boron significantly affect the alkalinity of a coral’s soft tissue and the formation of aragonite in its skeleton. Potassium is related to the red chromo-proteins.

1ml will raise the potassium level of 100 liters (25 gal) by1.75ppm.

Red Sea Reef Care Recipes offer easy-to-understand and simple-to-implement instructions for reef maintenance, tailored to each type of aquarium. 3 easy steps for maintaining your reef aquarium. Water changes | Supplementing | Testing.

Select the system type that best describes your reef. The Reef Care Recipe will outline the ideal water parameters for your system, how to maintain them and what products to use.

Manufacturer information

With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.

The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.

For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.

Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.

Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.

5 Stars


Reviewed on
April 15, 2019

Yes, I would recommend this.

Helped raise potassium!

Title says it all! It raised my levels to the level I wanted my potassium to be at!

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Reviewed on
April 03, 2019

Yes, I would recommend this.

Red sea colors

I used all the rea sea colors and they do help corals grow and color up

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Reviewed on
March 26, 2019

Yes, I would recommend this.

I feel like it works

Pros: Easy to dose

Cons: None

All of my corals have great coloration.. I have bleached a couple of acropora and they have bounced back fairly quick and I think I'd have to thank red sea and marine depot for that

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Reviewed on
February 06, 2017

Yes, I would recommend this.

Good for cap corals

I had a large orange cap in a 2 year old 300 gallon tank that was developing gray patches. I added 25 ml per day of this fine product and the patches disappeared in 3 months. I am happy.

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john turner

Reviewed on
October 25, 2012

Yes, I would recommend this.


My sps corals look great since beginning this product.The test kit to test for K is a bear though.I couldn't recommend this to the average hobbyist who has a busy schedule

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Reviewed on
August 14, 2011

Yes, I would recommend this.

Happy Corals!

I run the ZeoVit system on my tank, which tends to deplete Potassium. I've had a hard time finding a potassium supplement that isn't extremely expensive. This stuff works. The dosing chart on the back is handy to avoid doing too much math, and the measuring cup lid is also a great idea.

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