CrystalClear, 8 OZ, Sparkle Fountain Cleaner, Designed Specifically To Keep Fountains, Bubblers & Disappearing Waterfall Features Clean & Clear All Year Long, Helps Prevent Stains, Sludge, Mineral Deposits & Organic Contaminants From Forming In Basins, Works On All Water Feature Surfaces, Tough Stain Lifting Formula, 8 OZ Bottle Treats 80 Gallons.