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Reef Strontium (500mL) - Seachem
Seachem$11.33Strontium occurs in natural seawater at a concentration of about 8 to 10 mg/L. It is chemically very similar to calcium, and many organisms incorporate it in their skeletons along with calcium. Its addition to reef aquariums aids the growth of corals,... -
CoralUp (8 oz) - Caribsea
Caribsea$10.99CoralUp™ incorporates the same patented dual method approach to calcium supplementation as PurpleUp, but with a trace element composition specifically engineered for skeletal coral growth. CoralUp™ is not simply ionic calcium with trace...