SKU: 346152271

Red Sea Reef Foundation A Calcium

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Description

Red Sea Reef Foundation A CalciumRed Sea Reef Foundation A (calcium) Red Sea Reef Foundation A is used to maintain optimal calcium levels in coral reef aquariums to support healthy coral growth and stability in water parameters. A successful coral reef aquarium is dependent upon maintaining the appropriate water parameters that in turn provide the stable environment required by the corals. Although all the elements found in natural seawater have an important role in providing optimal

Red Sea Reef Foundation A (calcium)

Red Sea Reef Foundation A is used to maintain optimal calcium levels in coral reef aquariums to support healthy coral growth and stability in water parameters.

A successful coral reef aquarium is dependent upon maintaining the appropriate water parameters that in turn provide the stable environment required by the corals. Although all the elements found in natural seawater have an important role in providing optimal water parameters, a few of them have a more significant role in the overall stability. These elements are the foundation of the reef environment and they include the three major elements, Calcium (Ca), Magnesium (Mg), and Bicarbonates (HCO3). These 3 elements have a major effect on the water chemistry (pH stability, Alkalinity, seawater ionic strength) and on many of the coral's biological processes (skeleton formation, ions exchange, photosynthesis).

The foundation elements complement each other in the formation of the coral skeleton and if not available in the correct ratios one of them will quickly become the limiting factor of healthy coral growth.

Reef Foundation A contains Calcium, Strontium, and Barium according to the ratios found in coral skeleton.

Dosage Liquid

1ml will raise the Ca level of 100 liters by 2ppm

Different from the liquid Foundation Program, the powder formula has a much higher concentration.

Dosage Powder

1g will raise the Ca level of 100 liters.

Supplementing weekly - Soft / LPS Corals

Test the foundation elements every week and dose each supplement to replenish them back to the optimal levels.

Supplementing daily SPS / LPS corals

Ensure that all of the foundation elements are at optimal values and run the aquarium for 4 days at a stable salinity (compensate for evaporation daily by adding freshwater) without adding any supplements. At the end of the 4 days, test the foundation elements and calculate the 4-day dosage of each supplement to replenish back to the optimal levels. Add the 4-day dosage to the system. Divide this 4-day dosage by 4 and use it as the daily dosage for the next week.

After a week of adding the daily dosage, test the foundation elements and calculate the adjusting dosage of each supplement to replenish back to the optimal levels.

If the adjusting dosage is significantly different from the previous daily dosage amend(increase/decrease) the daily dosage as appropriate.
If the measured level of a specific element is above the optimal level wait for the excess of the element to be depleted before restarting the daily supplementation with the amended daily dosage.

Continue testing all of the elements every week and make adjustments to the daily dosages as required. As your corals grow or you add or remove livestock the uptake of the elements in your aquarium will gradually change. It is recommended to keep a logbook of the weekly measurements and dosages.

If you miss one or more days of supplementing add the complete amount that you have missed but do not exceed the maximum recommended daily increase for any of the elements. 

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SKU: 346152271

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Artem
Port Orchard, US
★★★★★ 5
Super Comfortable and Cooling Pillow!
Color: Blue, Size: Standard
I’ve been using this pillow for a few days now and I really love it! The cooling gel side feels amazing and stays cool during the night. The memory foam is soft but still supportive for my neck and shoulders. I wake up feeling much more rested and without neck stiffness. The quality is excellent and the cover is very soft and easy to clean. Definitely worth the purchase!
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Reviewed in the United States on May 10, 2026
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Johanny Batista
Belleville, US
★★★★★ 5
Loved it ♥️♥️♥️
Color: Blue, Size: Standard
Very comfortable and cool for sleeping. The memory foam provides excellent neck support and helps you rest better throughout the night. I loved the cooling cover because it truly feels cool and soft. Plus, it is easy to wash and maintains its high quality. Highly recommended.
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Reviewed in the United States on May 29, 2026
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Amazon Customer
Los Angeles, US
★★★★★ 5
Perfection!
Color: Blue, Size: Standard
This pillow is so good! Perfect firmness and enough support. It’s very comfortable and does help with sleep especially on hot nights! The cooling gel does a great job of keeping the pillow cooler. It’s a good size pillow for a twin bed. I also like that it can be very compact when taking with you, the memory foam compresses very easily and fluffs back up quickly, so it’s very adjustable. Great value for the money! I definitely recommend!
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Reviewed in the United States on May 2, 2026
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Nikki
Omaha, US
★★★★★ 4
Good pillow that becomes warm faster than competitors
Color: Blue, Size: Standard
I have bought several cooling gel pillows and am quite happy with this one with one caveat, that it doesn't retain coolness as long as other cooling pillows like my sealy that fell apart. Now, a cooling pillow will never retain coolness indefinitely, neither will a normal pillow, but this one tends to become just a normal gel warmth about 30 minutes before my old Sealy so I can't give it a full recommendation. It does however seem to be a nice pillow otherwise with a nice supportive firmness and provides a nice sleeping experience as a pillow, and when it's cool it's quite cool. It holds up the coolness for about an hour while sleeping in a case normally and maybe close to two hours when I have the AC on.
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Reviewed in the United States on April 6, 2026
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Nora
Cuba, US
★★★★★ 5
Great cooling pillow, and cat-approved!
Color: Purple, Size: Standard, Color: Purple, Size: Standard
I've been using this EGOHOME cooling gel memory foam pillow for a few weeks now, and the cooling feature is definitely the standout for me. The reversible cooling cover really does what it promises — it feels noticeably cool to the touch, especially when the AC is on, and makes a big difference on warmer nights. It helps create that fresh, cool sleep surface that makes it easier to relax and fall asleep. Beyond the cooling comfort, the memory foam strikes a great balance between soft and supportive. It keeps my neck aligned whether I sleep on my side or back, and I’ve been waking up feeling more rested with much less neck stiffness than before. The removable, washable cover is also a practical plus. One small note: the cooling effect does gradually fade after an hour or two without AC, so pairing it with a fan or air conditioning helps maintain that cooler feel longer. And perhaps the highest endorsement I can offer: my cat Duoduo claimed it immediately. She’s been loafing on it with a look of complete ownership ever since — I’d say that’s the ultimate comfort test passed.
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Reviewed in the United States on May 27, 2026

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