Natural Chemistry 03557 4-in-1 Natural Clarifier Concentrate, 1-Gallon Natural Chemistry 4 In 1 natural clarifier clear is a chitosan based clarifier made from recycled crab shells Highly concentrated natural formula, impossible to overdose Very effective with high sanitizer levels Can use in dosage as 1-ounce per 7,000 gallons for standard rate and 1-ounce per 5,000 gallons for cloudy water rate Comes in 1-gallon container