We just finished remodeling our pool and we went with the Pentair 520 cartridge and it filters pollen and fine particles much better than our old sand filter. The pressure cleaner works fine but there always seems to be a fine layer of dust/pollen that it just stirs up. I like the idea of also getting a suction side cleaner to get the fine stuff but I just seems like it's going to clog the cartridge filter much faster. I guess the fine particles are going to make it to the filter one way or another. Are there a lot of people with cartridge filters that mainly use suction cleaners?