This all-season powder formula of pond bacteria contains five species of beneficial bacteria, designed for year-round use in watergardens. This formulation combines the benefits of both pond bacteria and barley straw. Combines the benefits of Aquaclearer and String Algae Buster into one product! Apply 1oz. per 1,000 gallons every 1-2 weeks PDB2 Pond Bacteria Dry-Barley Straw Formula 2 lbs. Treats up to 32,000 gallons Pond Bacteria Dry-Barley Straw Formula 10 lbs. Treats up to 160,000 gallons! ponddepot@msn.com Copyright - All World Rights Reserved Pond pumps, Pond Kits and Pondless Waterfall kits, Underwater Pond Lights. Aquaclearer Extreme bacteria and String Algae Buster and pond fish food. Pond Depot provides Do-it-yourself pond kits and Pondless waterfall kits delivered right to your home at great prices! Thank you for shopping at Pond Depot you online pond superstore!