Calcium+ (Foundation A) – 500ml



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FOUNDATION® A Calcium and strontium complex for balanced formation of the coral skeleton

Ca | Sr | Ba
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.

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.

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Calcium+ (Foundation A) - 500ml

Calcium+ (Foundation A) is a liquid product with a volume of 1 liter. It likely belongs to a category of supplements or additives used in various industries such as aquaculture, agriculture, or horticulture. The "Foundation A" designation suggests that it is a basic or essential component in a series of products, possibly serving as a foundation for other treatments. It is likely used to provide calcium, an important mineral, to plants, animals, or water systems. The exact nature and use of Calcium+ (Foundation A) will depend on the specific industry or application, and it is recommended to consult the manufacturer's instructions or a specialist for further information.


Liquid supplement: 1ml will raise the Ca level of 100 liters (25 gal) by 2ppm. Powder supplement: 1g will 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.)      
16.5 lbs
12.50 × 9 × 10.50 in


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Frequently Asked Questions
Is hiring a professional necessary to set up a saltwater aquarium?

As a general rule, a larger custom aquarium might require installation by a professional. However, a kit from our online fish store is relatively affordable and beginner friendly. That means you should have no problem setting it up yourself.

Which saltwater aquarium fish should you choose when starting out?

Consider a yellow tang fish. This popular saltwater aquarium fish does a great job of coexisting with other types of fish you’ll find in our online fish store.

How does a saltwater aquarium differ from a freshwater one?

Saltwater aquariums require a bit more maintenance and monitoring than freshwater tanks. Different fish require different levels of salinity, pH tolerances, and temperature requirements. They also require specialized pumps, filters, and other equipment that can handle salt. We can guide you through everything you need to know to set up a healthy, thriving reef tank.

Do fish in a saltwater aquarium swim in a school?

That depends on the species. However, if it’s a fish that swims in a school in the wild, they’ll do the same in an aquarium. Some fish that swim in schools include the green and blue chromis, cardinalfish, and dartfish, for example. When ordering from an online fish store, make sure you do your research on how specific fish species behave to ensure they’ll school (or at least coexist) with your current fish.

Is the effort required to maintain a saltwater aquarium worth it?

Yes! Many aquarists dream of owning thriving saltwater aquariums. You have a tiny piece of the ocean in your home, featuring magical and exotic fish that can only survive in saltwater.