Within my pool I am seeing a settling white powder. Its sticking to most things, pump, plumbing, filter intake and tubing, and mostly settles in my sump. All foam style filter pads are absorbing it, I ring them out and it almost looks like milk. the inside of my canister was all loaded up... What is this. i am guessing some kind of mineral or something. The water isn't cloudy but is foaming. What the hell. Hopefully someone can help me out more than saying "do a water change". Thanks mike