Clear Pond Clear As Crystal 25-Lb [#30118]

CLEAR POND CLEAR AS CRYSTAL 25-LB [#30118]Clear Pond Clear as Crystal Pond Cleanser Keeps water clear and clean for up to 3 months. Clear as Crystal is a natural pond cleanser made of a unique form of Laumontite Crystal, Calcium Aluminum Silicate, and when placed into pond water, produces oxygen, balances pH and purifies water through an ion exchange process, Also: * Reduces toxic levels of ammonia. * Contains essential minerals to keep fish healthy and their colors bright. 25 lb. bag treats up to 3500 gallons of water. Depending on pond size, simply add extra bags. To use, cut a 3"-5" slit in bag and place in the bottom of the pond. At the end of three months, replace the bag with another bag of Clear as Crystal. Any remaining crystals can be safely eaten by the fish.