I went to the pool store the other day with a water sample and complaints of green algae in my pool. My free chlorine was .07, total chlorine .05, ph 7.8, calcium 214, alkalinity 89, stabilizer 90, salt 3900. We run our cell at 50% 12 hours a day per our pool builder. We were told to brush the spots, backwash and rinse, 1 gallon of acid, 9lbs of shock, 2 mustard algae packs, run filter 24 hours, day 2 vacuum to waste, shock with 6 more lbs.
I turned my cell up to 70% output and have done everything except day 2 (which will be done this afternoon). I tested my water and there is STILL NO CHLORINE!!
Our pool was built in in July. Our pool builder says we may already need to clean our cell. I would appreciate any input. Thanks!