EcoBlast is a great for killing string algae in your pond. Eco Blast can be used as the first line of defense to quickly and safely break down string algae from waterfalls, streams, rocks and other areas where algae is growing. Start using EcoBlast to spot treat the trouble areas in the pond and follow up with Aquascape Designs String algae buster SAB extreme on a monthly basis to help keep it away. EcoBlast works by oxidation to provide fast results! Simply turn off your waterfall and stream and sprinkle Ecoblast directly onto the algae. Wait a few minutes and then turn your pond pump back on. You will see some results in minutes! The rest of the results will come in the days following the treatment as the algae dies. No harm to fish or envirement when used at the recommended doses. Ecoblast works great in cold pond water! Starts working within minutes of application!!! 2lbs container treats 650 sq. ft. Granular Algaecide for watergardens and Koi ponds. 7lbs container treats 2,275 sq. ft. EcoBlast 38 oz. SOLD OUT Price was 34.95 Consider Pond Depot's store brand version, it's exactly the same thing at a cheaper price. Rock and Waterfall Cleaner 2.5 lbs. Same as Ecoblast! RW2 EcoBlast 7lbs. SOLD OUT! Consider our store brand version, it's exactly the same product. Price of Ecoblast was 58.99 Rock and Waterfall Cleaner 8 lbs. Same as Ecoblast! RW8 Rock and Waterfall Cleaner 15 lbs. Compare to Ecoblast! RW15 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!