Find the lowest price for:       All ProductsFilter Media     0.0 (0)   Add a review PURA PhosLock 1135 gram   For the ultimate in phosphate control, nothing works like PhosLock. This ingenious product is made from ferric hydroxide, which permanently binds phosphates, rendering them harmless in your aquarium- no more algae... Have a question? Ask the Experts! Compare Prices Product Spec Member Reviews Recommend to Friends Category Chemical BiologicalChemicalMechanicalMedia Bags--------Suggest a new option Something wrong in this page? Let us know! Related products: More Chemical Filter Media Other Filter Media internal use: spec355