If have a FNS PLus 60 DE filer, pool is 2 years old. Problem I'm having is that even though I have cleaned the filter, and saw now visible tears in the filters, it does not seem to filter out the sand that is picked up from the pool. I have flagstone coping and some decking, which is where it looks like the sand is coming from. When the pool was new, I don'r recall have such a problem.
Any ideas/suggestions? Should I try adding more DE?