BWV1604 Features: * Shimmer clarifier * 4 x 1 quart bottles * Coagulates dirt, oil and other debris that cloud the water * Improves filter performance and efficiency * Start-up dosage: 8 oz. per 10,000 gallons * Maintenance dosage: 4 oz. per 10,000 gallons Dimensions: * Dimensions: 9.5"" H x 3.5"" W x 3.5"" D