Every spring my neighbor's tree produces enormous amounts of pollen that ends up in my pool (through my lanai screen). It turns my pool green cloudiness and green dust settles on the bottom. It is NOT algae. All my chemicals are holding well, including the chlorine. The problem I have is that it is either so fine that the filter has no effect on it or it just comes in so much quicker than the water can circulate. I have a cartridge filter so a floc isn't an option. Any advice on how to get rid of this? It takes months for it to completely filter out and I am constantly brushing the pool floor trying to get it to the drains.