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Economical concentrated formula
7% nitric nitrogen
PolypLab One is engineered from two forms of acetate and hydroxide salts
long-lasting flexible silicon sealing ring in pumphead (for easy and safe replacement after cleaning)
Seachem Gray Coast Sand 20lb Gift Card Economical concentrated formulaFeatures Natural calcite for all types of marine, reef, and tropical aquaria Assists in stabilizing calcium and alkalinity Helps prevent large pH declines High in magnesium Maximizes color of marine fish Overview Gray Coast Calcite is an all natural calcite substrate for all types of marine, reef and tropical aquaria. Its chemical composition will assist in stabilizing calcium and alkalinity while preventing large pH declines. Simply rinse before use