ULTCOVER Waterproof 600D Polyester Square Outdoor Spa Cover 90x90 Pool Water Care Owners who try to run

Owners who try to run mineral systems with zero sanitizer end up with cloudy water and biofilm problems

The minerals do the heavy lifting that lets the whole system work

Output: 12V

9% of waterborne pathogens

Set your alkalinity into range with Alkalinity Up and that instability disappears

ULTCOVER Waterproof 600D Polyester Square Outdoor Spa Cover 90x90 Pool Water Care Owners who try to runULTCOVER Waterproof 600D Polyester Square Outdoor Spa Cover 90" x 90" Overview Guaranteed to fit hot tub size up to 90(L)x 90(W), Actual cover size is 92(L)x92(W)x20(H). NOTE: This cover can not be used by itself without an insulated hard cover under it. Made of top quality 600D polyester canvas complex with waterproof backing. Tough enough to keep rain, hail, snow, dust, leaves and bird droppings away. ULTCOVER provides 3 years warranty and