I have been having a real problem so far this season ever since I opened the pool mid March. Dirt/dust/pollen has been collecting on the bottom of the pool in large amounts. I vacuum it up and within hours, it's back. It has been very dry here, we haven't had rain in a few weeks now. I know it is not algae and my CC is at 0 with no overnight FC loss. The "fine powder" collects in the wrinkles of the liner then gets stirred up and clouds my water and it takes a while for it it clear again, then the process starts over again. I think the powder is so fine it is passing right through my cartridge filter. Anyway, my question is can I add DE powder in the skimmer to try and collect the fine powder and keep it from returning to the water? And if I can, how much should I add?