PhosDrop treatment for phosphate removal in koi pond, small outdoor pond Koi Pond Clarifier- flocculant clears cloudy water caused by nutrients and suspended particles Safely balances koi pond pH while improving clarity Apply 1 oz scoop of PhosDrop per 1,000 gallons of pond water- use every 2 weeks for best results : Pour powder into waterfall, skimmer filter or other area with water movement Treatment safe for fish, wildlife and pets PhosDrop is a koi pond treatment formulated to remove phosphate from water. Phosphate causes unsightly blooms and clouds water. This is a great "pond shock". Knocking down phosphate while balancing pH at the same time. PhosDrop restores balance to water while improving water clarity. HOW TO USE PHOSDROP- Pour powder into moving water. Apply 1 oz scoop per 1,000 gallons of water. Can be used at any water temperature. Treatment can be safely used with SludgeX, SummerClear, and NutrientKnockout by Koi Life. PhosDrop phosphate remover safe for fish, wildlife, pets and birds.