Filter cartridge replacement. Average life span of this filter model is 3-5 years if cleaned and taken care of properly.
Spa Filter Replaces Watkins 303279, PFF42TC-P4, 78460, FC-2402, Lifesmart, Freeflow, AquaTerra, Hydromaster, Grandmaster, Simplicity, Bermuda Hot Tub Filters (2, White)