Hi. New pool owner since October. I been been trying to keep the pool balance using the BBB method since I got the pool drained back in November. The pool guy power washer it and he said he used acid with no luck. There are some dark stains all over the pool. It is worst around the deep end. I put a chlorine tab on a couple spots around the pool for about 5 minutes and it did not change. What should I try next?
Results from poollogger.com
FC: 2.5 (I added chlorine after this to bring it up to 5)
CC: 0
PH: 7.8
TA: 125
CH: 275
CYA: 40
Temp: 66
Results from poollogger.com
FC: 2.5 (I added chlorine after this to bring it up to 5)
CC: 0
PH: 7.8
TA: 125
CH: 275
CYA: 40
Temp: 66