Extremely frustrating. Here are pics, looks as if we just took the cover off. P.S. to address CYA again, it hasn't varied from 50 since we opened the pool with regular testing, so retesting it from just 2 days ago does not seem relevant to this and just seems to waste the reagent.
- - - Updated - - -
Yes, the 16 was only a base, a lot of times I added extra bleach/chlorine, so it was almost always higher and closer to 20 when I tested FC multiple times a day. Has been at 20 or higher without any change for close to a week.
- - - Updated - - -
Sorry. Reread your whole thread and you said you couldn't see the bottom. So that's more than a metals issue. Did you raise your slam/shock level to 20? Being at 16 isn't enough with a CYA of 50.
Yes, the 16 was only a base, a lot of times I added extra bleach/chlorine, so it was almost always higher and closer to 20 when I tested FC multiple times a day. Has been at 20 or higher without any change for close to a week.