SPA FILTERS: 50 SQFT HOT TUB CARTRIDGE FILTER, 13 1/4" X 4 15/16" Pool Chemicals phosphates in your water and

phosphates in your water and by the capacity of your pool or spa

If pool is heavy with algae growth

eye or skin irritation or dull

Pour required amount of this product into plastic

Ideal alkalinity range is 80-120 ppm for marcite

SPA FILTERS: 50 SQFT HOT TUB CARTRIDGE FILTER, 13 1/4" X 4 15/16" Pool Chemicals phosphates in your water andQCA spa filter for Performance Series or older Majestic series spas measuring 13 1 4 inches in length. This filter fits most current QCA Spas Jewel models. This may also fit older Majestic and newer Performance Series spas. It is a 50 sq. ft. filter with a 4 15 16" outside diameter, a 13 1 4" length and a 2 1 8" opening. To maximize the life of your filter cartridge: Clean the elements as instructed Do not use a stiff brush to scrub the media Maintain