The Pond Guy Barley Extract Natural Liquid Treatment for Ponds and Water Gardens, Safe for Koi Fish and Plants, Natural Solutions for Clear Pond Water – 1 Gallon Price: $69.94 (as of 02/01/2024 23:54 PST- Details)

All Natural & Safe: Barley Extract liquid naturally balances pond water and improves clarity. Safe for pond fish, koi, pets, wildlife, plants, and the environment.
Year-Round Pond Maintenance: Barley straw extract is an all-natural solution to maintaining clean and clear pond water. It can be used year-round to keep your pond water clean.
Easy Application: Use 1 fl oz per 500 gallons every 3 weeks. Pour natural pond clarifier directly into pond water. If pond water is turbid, double the dose and use weekly until the water is clear.