JACK'S MAGIC Quart Metal Solution - The Blue Stuff® soil-moisture-crystals backwash the filter once the

backwash the filter once the desired clarity has been achieved

Pentair R173217 200 Square Feet Cartridge Element Replacement Clean and Clear Pool and Spa Filter

easy to clean plastic

Two outer lower slash pockets: 9” x 9”

JACK'S MAGIC Quart Metal Solution - The Blue Stuff® soil-moisture-crystals backwash the filter once theThe Blue Stuff does everything "The Pink Stuff" does and more. The Blue Stuff's proprietary blend actually removes copper from the water. The Blue Stuff is also very stable in higher chlorine levels and can be used in many fountain and water feature applications. Dosage: Initially, add one quart (32oz.) per 10,000 gallons of pool water then 6 8 oz. per 10,000 gallons of water per week for maintenance.