My skimmers remove a layer of dust from the top of the pool, and a dirt accumulates under my the return jets. I believe that the Cartridge Filter used in my Pentair Clean & Clear CC200 is too coarse and I'd like to get a better filter. I have more than enough flow to tolerate a bit more restriction. I have tried two different filters, the original that came from Pentair and an aftermarket, both rated at 30 microns. I'd really like to filter down to 10 microns or so. Does anyone know of a replacement filter that would meet my needs?