Fighting green, cloudy water in your pond? Go natural with these barley straw pellets. This is a huge 9 Kg (20 lb) bag, perfect for medium to large ponds. Barley straw is a time-tested, chemical-free way to clarify water. As it breaks down, it releases compounds that inhibit the growth of algae, making your water clearer. It's completely safe for fish, plants, frogs, and other pond life. Usage is simple: just place the mesh bag (often included separately or you can use your own) of pellets in your pond. For a standard 3,000-gallon pond, you'd use about 1.8 Kg per treatment. You should start to see improvement in about 48 hours, and each application can last up to 6 weeks. This big bag could give you 4-5 treatments per year. A fantastic, eco-friendly alternative to harsh algaecides. Keep your water garden, fountain, or koi pond looking pristine and healthy the natural way. Just remember, it's a clarifier and algae inhibitor, not a filter - you still need proper filtration and pump circulation.