I'm sorry Carl, I didn't see your post until just now. Okay. I will start trying to keep the levels above 15. I have added a 1.42 gal / 182 fl oz bottle of 6% bleach today. I have added about half to a whole 1.42 gal bottle everyday for the last 3 days. I wasn't sure if I put enough, then other times afraid I may have put in too much. lol

I can check it as many times a day as I need to. I guess I can start with morning, noon, and evening. Thank you SO MUCH for the advice!