I did an overnight FC test and lost no chlorine, and we have high pollen alerts in my area pretty much every day for most of the year and this has been happening since I got the pool a few months ago, so I'm pretty sure the stuff I find in the bottom of my pool is just collected pollen. Now, what is the best way to clear the pool? Should I vacuum it up and catch it in the filter? Should I brush it and hope a skimmer sock catches it? Any other ideas I don't know about? Thanks so much!