Summit's Clear-Water barley straw pond treatment naturally keeps pond water clear without synthetic chemicals. As the barley straw bales slowly decay, the barley releases enzymes that aid in maintaining water clarity. To use, place on the water surface, preferably near a waterfall or filter outlet. Bale should float. If a bale sinks, remove for 24 hours to dry out. Allow one month of soaking before bale is fully effective. Each mini bale treats 1000 gallons. After 5 months, add a new bale. After 6 months, remove the old bale.