I have to balance my pH every day or two. It goes from 7.2 to 7.5 in about a day and to ~7.7 the next day.
Factors I am aware of that increase pH:
1. Bathers - the effect above occurs with or without bathers
2. Air leak in my piping - aeration as I understand it should not contribute that much of an increase
3. Daily Sodium Hypochlorite dose of ~300 cc(ml) [planning to get a liquidator at some point]
4. My fill water's TA is very high (>180) - the effect above occurs even if I do not top up. (I do use a bucket of water per chlorine or acid dose but that should be insignificant)
Anything else I am missing here? how much of a pH increase does the bleach account for?
My pool's TA is around 40. I am keeping it low since to my understanding higher levels will only offset my pH problem.
The recent frustration with pH increases got me thinking - something with the BBB method doesn't make sense to me. Soda Bicarb is used to buffer pH but it seems to me that this buffering is one sided. It has prevented my pH from going down but not from going up (that is assuming the buffering effect should work symmetrically around a pH of 7)
If that is the case, then using Bicarb with Bleach is not a good thing. Am I missing something?
If not, is there a buffer for preventing pH from rising?
Appreciate the help,
Some background information:
For anyone who is familiar with my previous posts - pertinent info since I last posted:
1. I still have a problem with my suction side pipe, but am using an alternate pipe for circulation. (some air is still leaking into the system). Should have it fixed soon I hope.
2. I had my (fiberglass) pool resurfaced
3. I refilled my pool about a month ago.
4. My current working method for balancing water is basically Hydrochloric acid to balance pH, Sodium Hypochlorite 12.5%, and no CYA.
Pretty much into a routine that works well, and my water seems to be doing fine for a change.
The downside of 0 CYA notwithstanding, using chlorine without a buffer is a real pleasure.