Removes phosphate which clouds pond water. Phosphate enters ponds through tap water, fish food and other sources Phos-out binds with inorganic phosphate making it unavailable as a nutrient. Using the dosing cap to measure, add 25 ml of phos-out for each 100 us gal (1/3 cup per 300 us gal) of pond water. Pour into water flow for best distribution. Repeat weekly or as phosphate levels increase.Size is 64 Ounce. Dimensions are 3.25 X 6.75 X 12 Phosphate Remover, Purified Water. UPC Code = 317163041550