Clear water barley straw is the natural alternative to treat cloudy water in decorative garden and fish ponds. Especially designed for economy and ease of use, each bale lasts for six months and includes a cork float. Clear netting holds barley together without detracting from pond plants and fish. Bales slip under the existing plants and become part of the pond environment. Treats 1,000 gallons of pond water. Will not harm fish or pond plants. Year round treatment for one low price.