Red Sea Reef Foundation A (Ca/Sr) – Powder 1kg


Robust coral skeletons are essential for all reefs, and only achievable by ensuring the basic elements Calcium, Magnesium, Strontium and Carbonate are readily available and in the correct ratio to each other. If they are not in the correct ration the coral skeleton can form as a fragile calcite.

This product is part of Stage 1 of the new Red Sea unique Reef Care Program (RCP). The Reef Foundation Stage provides a complete solution for testing and supplementing these foundation elements and allows the reef-keeper to take control of their aquarium.

Liquid supplement: 1ml will raise the Ca level of 100 litres (25 gal) by 2ppm.  Powder supplement: 1g will raise the Ca level of 100 litres (25 gal) by 3.6ppm. 1 kg will make 1.8L of stock solution.

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Red Sea Reef Foundation A (Ca/Sr): Your Key to a Thriving Reef Aquarium

Unleash the Beauty of Your Coral Reef Ecosystem

Welcome to a world where your coral reef aquarium thrives with health and beauty. Red Sea Reef Foundation A is the secret ingredient to achieving a thriving and vibrant aquatic ecosystem. Let’s delve into the essential features of this remarkable product:

Optimal Calcium and Strontium Levels

Maintaining the right calcium (Ca) and strontium (Sr) levels in your reef tank is paramount for the health and growth of your coral. Red Sea Reef Foundation A provides a balanced blend of calcium and strontium, ensuring:

  • Robust Coral Skeletal Growth: Witness your coral polyps multiply and thrive as they build strong skeletons.
  • Enhanced Coral Coloration: Enjoy stunning, vibrant colors in your corals as they absorb the optimal strontium levels.
  • Natural Alkalinity Stabilization: Achieve the ideal alkalinity levels, crucial for pH stability and overall reef health.

Crystal-Clear Water Clarity

Say goodbye to cloudy water and hello to crystal-clear clarity. Red Sea Reef Foundation A helps maintain the chemical balance necessary for pristine water conditions. Experience:

  • Reduced Algae Growth: Keep unsightly algae at bay with the right calcium and strontium levels.
  • Improved Light Penetration: Allow your corals to bask in the full spectrum of light, enhancing their growth and beauty.
  • Healthier Marine Life: Provide your fish and invertebrates with a clean and natural habitat, reducing stress and promoting longevity.

Simple and Precise Dosing

We understand that maintaining a thriving reef aquarium can be complex, but dosing Red Sea Reef Foundation A couldn’t be easier. Our product comes with clear dosing instructions, making it a hassle-free addition to your routine. Achieve optimal results with minimal effort, ensuring your reef’s success.


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