Wasn't sure which forum to put this in so move it if needed. I keep getting a brownish yellow "dust" that settles on the bottom. When undisturbed water is crystal clear. More seems to settle in the vinyl seems. I think its pollen from all the surrounding pines. If I brush it, it re-settles, if I vacuum it, it goes through the filter. If I vacuum to waste it's gone for 1 -2 weeks but slowly returns. My CC is always .5 or less. Overnight chlorine loss test is always .5 or less. Any ideas how I can deal with this stuff without pumping out 500 gals or water every 1-2 weeks.