Endless Pools 77728 Swim Spa Filter Cartridge (2 Pack) Type_Clarifier It's a buffer that holds

It's a buffer that holds pH steady — not a corrector that moves a badly out-of-range reading

and it's also the most neglected

Designing high quality replacement parts for all major hot tub brands

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Endless Pools 77728 Swim Spa Filter Cartridge (2 Pack) Type_Clarifier It's a buffer that holdsEndless Pools 77728 Swim Spa Filter Cartridge (2 Pack) Overview The Endless Pools 77728 Swim Spa Filter Cartridge 2 Pack replacement is compatible with Endless Pools. Fits models: E500, E550, E700, E2000, X200, X500, X2000, R200, R500. This HotSpring filter provides more efficient filtration and better water clarity. Spend less time cleaning and more time enjoying your swim spa. Whats in the Box 2 x Endless Pools 77728 Swim Spa Filter Cartridge (2