Swimming Pool Winterizing Chemical Kit for 15000 Gallons 7,500 Gallon Pool-Trol Winterizing Kit contains: 1 dispenser (23 oz.) Winter "G" Tablets 1 quart Liquid Winterizer 1 lb. Shox Non-Chlorine Oxy Shock Treatment 15,000 Gallon Pool-Trol Winterizing Kit contains: 2 dispensers (2 lbs. 14 oz.) Winter "G" Tablets 1 quart Liquid Winterizer 1 quart Winter Stain Out 2 lbs. Shox Non-Chlorine Oxy Shock Treatment 25,000 Gallon Pool-Trol Winterizing Kit contains: 3 dispensers (4 lbs. 5 oz.) Winter "G" Tablets 1 quart Liquid Winterizer 1 quart Winter Stain Out 1 quart Winter Conditioner and Deodor The dispenser contains 23 oz. of buffering agents to condition your water during the winter months. Specially formulated to prevent stains caused by mineral deposits, such as iron or copper, in your pool water over the winter months.