Leisure Time Bright & Clear | Water Clarifier Type_Clarifier and you get a filter

and you get a filter built to perform through cleaning after cleaning

There can never be too much grilling space

A filter that looks clean from the outside can be operating at 30–50% of its rated capacity inside

Using spa test strips

Most of those particles are too small to be physically caught by a standard cartridge filter

Leisure Time Bright & Clear | Water Clarifier Type_Clarifier and you get a filterLeisure Time Bright & Clear is a fast acting liquid clarifier formulated specifically for spas and hot tubs. Active chemistry: a proprietary blend of clarifying polymers engineered to perform in heated, agitated water exactly the environment where pool clarifiers tend to fail. Used weekly, Bright & Clear restores sparkle to dull water, helps your filter work at peak efficiency, and keeps the spa visibly clear between drain and refill cycles. Cloudy