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Zinc sulfate
some phosphate is still released
You may mix it with calcium
the response of the unit may be checked by holding it briefly over the mouth of an ammonia bottle (e
Seachem Reef Advantage Calcium 250 grams Coralline Zinc sulfateConcentrated, powder ionic calcium. Maintains magnesium and strontium. Can be added directly to aquarium. Overview: Reef Advantage Calcium is a non caustic (pH 8. 38. 6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. Reef Advantage
US$ 19.90
US$ 19.90
US$ 17.87