Hello all, I wanted to give you guys an update on my pool. I finally got my ph up to normal range 7.2 and it's been holding steady. However, I'm still losing huge amounts of chlorine every day. For the past few days, I check in the morning and my levels are the following
cl - 10+
fr cl 10+
ph ~7.2
tot alk 120
Cyanuric acid 100

At 6 pm The Cl and Fr CL go to zero and other levels stay the same. So I add shock and the levels go up. This process has been the same for about 5 days. Any thoughts?

I use 3" tabs in my chlorinator (5 tablets) and I run filter for 8 hours. The setting on the Chlorinator is maxed out. Last year, I think I used 3 tablets and ran filter for 4 hours and that was fine. Bottom line, something is eating my chlorine. Any help would be great. Thanks.