Laguna Phos-X 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, Phos-X is easy to use and greatly reduces hands-on pond maintenance, Simply place one or more packs of Phos-X in the pond filter to maximize its effectiveness, Features:, 4 Pack, Net Vol, 1, 6 liter, Treats up to 5283 U, S, gallons for up to 3 months, Super concentrated formula, Quickly reduces phosphate, Creates a crystal clear water garden, Safe for fish and plants, SKU: BCI29104