Hey everyone, looking forward to learning more from you all than I already have. We moved into a home last fall with an inground fiberglass pool (wanted fiberglass for the doggies) and had nothing but water trouble for the month we were able to swim. The water was initially crystal clear but PH was 6.0, ammonia was 4ppm, and CYA was above 200. I was at the pool store every day buying more stuff to try to fix things, but that just caused more problems.
I'm planning on opening next week so we'll see where the CYA is. Hopefully it's gone down. If not I just ordered some of the new bioactive CYA reducer, I'll see if that works before I have to do a series of drain/refills. The pool has always been on chlorine tablets so I'm sure that was the main cause of the high CYA.
Thanks to you all for the help you've already been with the good information in your posts.