The Microbe-Lift Spring & Summer Cleaner contains cellulase and hyper cellulase-producing bacteria. This jump starts your pond by encouraging the proper organic balance in your water from breaking down organic decay and reducing residual sediment build-up. This natural and non-toxic cleaner is pre-measured in eight 2 ounce packets and are simple to use. They treat up to 5,000 gallons of pond water for 4 weeks.