Red Sea Reef Foundation A - 500ml

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Reef Foundation A Calcium plus Supplement - 500ml (16.9 oz)

Ca | Sr | Ba

Red Sea’s CALCIUM+ contains blended salts of calcium and strontium in the ratio required by corals and is part of Red Sea’s complete Reef Care Program.

Foundation A - Liquid Calcium 500ml

Plus Sr | Ba Supplement

Calcium, magnesium, strontium and carbonate are the basic foundation elements of coral skeletons. All of these elements need to be available in balanced proportions for positive coral health and growth.

For best results, dose according to a measured uptake of Calcium KH/Alkalinity and Magnesium using Red Sea’s FoundationTM Pro multi test kit.

Aquarium Type Average daily usage
Liquidml/100L (25gal) Powderg/100L (25gal)
Mixed Reef 3ml 1.7g
SPS Frag 6ml 3.4g
SPS Dominat 4ml 2.2g
Ultra Low nutrient SPS 2ml 1.1g


Liquid supplement:1ml will raise the Ca level of 100 liters (25 gal) by 2ppm.

Powdersupplement:1gwill raise the Ca level of 100 liters (25 gal) by 3.6ppm.
1 kg will make 1.8L of stock solution.

Package size/volume:

500 ml (16.9 fl. Oz.)
250 ml (8.5 fl. Oz.)
1 L(33.8fl. Oz.)
5 L (1.32 gal)
1 kg - powder (2.2 lb)

The FoundationTMSupplementsis part of Red Sea’s complete Reef Care Program, which provides all of the supplements, test kits and coral foods required to maintain a successful and healthy coral reef aquarium.


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