Numbers first:
PH: 7.8
TA: 75
CYA: 90
CH: 300
FC 5.5
TC 5.5
No SWG ( I know CYA is high - on a bleach only diet) 30K in ground pebble tec built 2014
I bought this home four months ago and when I moved in PH and TA where both very low. Initially raised TA to ~100 and PH to 7.5 but from here I am constantly been fighting PH drifting up. The pool gets minimal use as I do not have kids and I do not run the water fall features to try to avoid PH drift. I do have an infinity edge spa that gently trickles over into the pool but not sure how much that would contribute to PH rise. I keep adding PH minus with the thought that perhaps when TA gets a bit lower the rise will stop but no change to date. I am now getting nervous to lower TA any further for the following reasons:
Question is what should I do? Would raising TA help by chance? But then I think that higher TA causes PH drift which is exactly what I am fighting. However, lowering TA anymore seems it might start getting corrosive? Any advice is greatly appreciated.
Additionally I do not have PH bounce - I check PH each day and it consistently rises from 7.5 to 7.9 and up over about a week or less. I am using 8% bleach at about 3/5 a gallon a day. I test with the TF-100 FAS-DPD test kit.
PH: 7.8
TA: 75
CYA: 90
CH: 300
FC 5.5
TC 5.5
No SWG ( I know CYA is high - on a bleach only diet) 30K in ground pebble tec built 2014
I bought this home four months ago and when I moved in PH and TA where both very low. Initially raised TA to ~100 and PH to 7.5 but from here I am constantly been fighting PH drifting up. The pool gets minimal use as I do not have kids and I do not run the water fall features to try to avoid PH drift. I do have an infinity edge spa that gently trickles over into the pool but not sure how much that would contribute to PH rise. I keep adding PH minus with the thought that perhaps when TA gets a bit lower the rise will stop but no change to date. I am now getting nervous to lower TA any further for the following reasons:
- One my TA of 75 is on the low end of most acceptable scales
- My adjusted TA would be closer to 45 due to my high CYA levels
Question is what should I do? Would raising TA help by chance? But then I think that higher TA causes PH drift which is exactly what I am fighting. However, lowering TA anymore seems it might start getting corrosive? Any advice is greatly appreciated.
Additionally I do not have PH bounce - I check PH each day and it consistently rises from 7.5 to 7.9 and up over about a week or less. I am using 8% bleach at about 3/5 a gallon a day. I test with the TF-100 FAS-DPD test kit.