is specifically formulated for freshwater ponds to reduce many of the compounds that encourage unsightly water conditions and foul odors. Phos-X absorbs and traps phosphate, nitrite and nitrate, gradually and safely. As a result, your pond water will be crystal clear and provide ideal living conditions for fish and plants. Treats up to 5283 U.S. gal. (20 000 L) for up to 3 months.
Quickly reduces phosphate
Creates a crystal clear water garden
Safe for fish and plants
When exhausted makes a great biological filter media