Quote Originally Posted by Bleach=Chlorine?
Is 10+ over your test? I think shock in the 30-50 CYA range is like 15 ppm. I would keep cl in that range, run the filter 24/7 and backwash as needed. Make sure your return is clear water otherwise you may have an issue inside the sand filter that is allowing matter to escape back into the pool.

I actually do not have a sand filter, I have an intex 18x48 metal sided with the filter that came with it.-the man at the pool atore said to use a flocculant. Any comments