So I have 3 pentair systems. 520sq ft four filter jobs. Two run the pool and one runs the hot tub. The two that run the pool run all year, but only run 6 hours a day in winter unless it drops to 35 deg F. (My pool is essentially open all year round.)
My usual activity is to fully replace them every other year. I pull the filters apart and clean them in the spring (after pollen season) and in the fall. I do this with a power washer and then soak in a high % chlorine solution.
What do you do?