SeaKlear Chitosan Clarifier for Spas, 1 Quart Bottle Safe to use with all conventional or alternative sanitizers and salt systems Removes excess oils and lotions to prevent scum at the water line Environmentally Friendly Improves filter efficiency and makes cleaning easier Can't be over-dosed! Eliminates oil, scum and excess metals Compatible with all sanitizers Makes cleaning all filters quicker and easier Trusted as reliable and effective for more than 15-year Available in 1-quart