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Well it must have been some algae. Over two nights I added chlorine and would get little to no free chlorine. Added enought chlorine to shock, now my water is clear and I have about 8ppm FC From <1 ppm. Thank you everyone for your help! Current test results: FC 8 pH 7.5 TA 120 CH 180 CYA...

My pool is around 20,000 gallons. I have added liquid bleach to boost Free Chlorine. My filter is running about 12 hrs a day currently; was running around 8 with out problems before draining the pool. I'm not rulling out an algae bloom, it did take me a while to empty and then fill the pool...

Hello, This web site is GREAT! I have been reading and learning a lot on this forum. However I have not seen this question asked yet. When we moved in to the house the pool had high CYA 200ppm and high CH 500ppm. I drained the pool and refilled with fresh water. Had some cal-hypo, that I...