I've been an above ground pool owner since 2006. I've changed the filter sand many times, but I'm just now hearing about deep cleaning your sand. I read about it and watched the videos. Are other people doing this and if so, how effective it is? Adjacent property to ours has older, tall pine trees and that's the primary debris issue along with the pollen I deal with in my pool. Will that kind of debris actually float to the top when you do that cleaning? I've always just changed the sand every couple years before now. I use a skimmer sock all the time.