Wow I can't believe I'll be in the pool soon.Question I have a cartridge filter pro clean I use BBB and the pool is great sanitary and clear 18x36 but if I can make it more clear I would like to.I read some where that you could add DE to a cartridge filter for even smaller particle clean has anyone done this / How would I do better to move up to a 200 sq ft filter just wondering thanks for any response may be able to get in next week end temp near 90 I don't go in under 77 water temp LOL