Start using Zeobest instead of sand in your sand filter. Using 100% natural zeolite minerals, Zeobest provides excellent water clarity, purity, and quality. Zeobest has nearly 9800 times more square footage than sand, enabling it to filter small particles down to 3 microns for exceptional water clarity - that's 10 times smaller than sand! This amazing filtering media also removes the ammonia produced from dead organic material in the water, reducing eye irritation and odor. Plus, it cuts down on chemical demand - saving you money on chemicals! Zeobest is easier to use then sand. You will only need one pound of Zeobest for every two pounds of sand your filter requires - 1/2 the effort! Since Zeobest has a greater capacity for particulates than sand; backwashing will be much less frequent. Comes in a 25 lb. bag. How can you go wrongTurn your sand filter into a super filter with Zeobest ! Available at AppliancesConnection