Let me start from the very beginning. The pool is a fairly new install. A few days after it was completed we had lots of rain and the muddy water poured into the pool. It took a week of brushing, vacuuming and cleaning the filters to get the mud out. It took about two weeks total to get the pool blue again. In that time I laid two pallets of sod and another big rain came in. Sure enough I got more muddy water into the pool. The over flow drain in the pool led straight into the saturated muddy soil and the water was back flowing into the pool. That problem is now taken care of. Anyhow, I have been having filter problems since.

At this time I do not have anything other than the Cl and pH test kit. I am at a lost though. I soaked my filters in cartridge cleaner over night, rinsed them off this afternoon and reinstalled them into the capsule. My pressure went from 10 psi to 20 psi in under an hour. One thing that I did notice while rinsing the filters was that in between the pleats, there is build-up in the crease. I was able to scratch some out with my nails. Could this possibly be the issue? Must I scrape every crease along all four filters which are about three feet tall? Or did I ruin the filters with the acid bath? Thank you for the suggestions.