Enzyme Clear is a concentrated, all natural spa clarifier formula that helps to keep your spa water crystal clear and clean while reducing maintenance time and chemical usage. Biodegrades: body oils, suntan lotion and other contaminants commonly found in hot tubs. Destroys scum lines and eliminates odors. The concentrated formula means you use less, so it is more economical to use than other enzyme products.Product notes: Contains natural clarifying enzymes derived from natural plant sources. Dose is just 1 oz. per 150 gallons weekly. You"ll get unsurpassed water quality.