- Jun 22, 2014
- 47,861
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Well, something is tearing-up that chlorine. Getting it up to at least 10 is a priority. You have a fairly large pool so it's a bit of work I know. I wouldn't worry about the fine-tuning of the pH back & forth. 7.0 - 7.2 is fine. Next time you hit the water with chlorine and test in 10 minutes, please post a CC reading as well. Curious to see if it spiked. Don't add any stabilizer yet. If you do have ammonia, it will only make it worse. Wait until you know the FC is beginning to hold between 5-10 after a 10 minutes test.