Reef Phosphorus 500ml

Reef Phosphorus 500ml is Seachem's phosphate supplement for reef aquariums with insufficient available phosphorus. It adds phosphorus for organisms that need it, making it functionally different from a phosphate-removal product.

Measure phosphate before supplementing and raise a depleted level gradually. Repeated readings help reveal ongoing consumption and establish a steady maintenance amount. Consider nitrogen availability and all other nutrient inputs when judging the result; adding phosphate to an already elevated system defeats the product's purpose.