WINTER KIT 30,000 GALLONOn Guard Winterizing Kit for pools up to 30,000 Winterize your swimming pool with the OnGuard Winterizing 30,000 gallon kit. Keep your pool clean this winter and open up clear next spring. Kit Contains 4 Pound Tablet Floater w patented borate oxidizers & enzymes Borate will help control algae growth, stabilize pH and reduce corrosion. 1 Quart Stain & Scale Control A stain and scale preventer, which will help control staining and the reduction of