Does anyone know why pH creeps up with no use of a spa? I balanced one day and didn't use it and the next day, the pH was 7.2, when I had left it at 7.8. I'd left ALK at 40 and it had dropped to 30.
Question about pH
- Thread starter Sjde
- Start date
Do you mean pH dropping?
I'm confused about the question, clearly. Are you using pucks/tablets? Low TA can also cause pH to drop.
TA shouldn't drop unless you are draining and refilling with low TA water. You probably will want to raise your TA a bit if you want your pH to be a bit more stable.
That being said, I'm also having low pH issues when I don't aerate. Dunno why it happens when I don't do something that I know will cause it to drop (such as pucks or adding CYA).
I'm confused about the question, clearly. Are you using pucks/tablets? Low TA can also cause pH to drop.
TA shouldn't drop unless you are draining and refilling with low TA water. You probably will want to raise your TA a bit if you want your pH to be a bit more stable.
That being said, I'm also having low pH issues when I don't aerate. Dunno why it happens when I don't do something that I know will cause it to drop (such as pucks or adding CYA).
Oh yes, sorry- I meant pH dropping.
We use a bromine floater. This was just after a drain and refill. We always are battling low TA. It was at 30 when i started. I got it to 50 but the pH was too high and then I got it to 40 and left it there as the pH was already at 7.8.
We use a bromine floater. This was just after a drain and refill. We always are battling low TA. It was at 30 when i started. I got it to 50 but the pH was too high and then I got it to 40 and left it there as the pH was already at 7.8.
I suppose I could've used more baking soda to get the TA even higher before I used the Spa Down to lower the pH. I already felt like I had used a lot of baking soda.
I think bromine tablets can lower pH. A quick check tells me yes, that bromine's pH is about 4.
I think you can use the baking soda to increase TA, but then will probably need muriatic acid to lower pH. Actually I believe the process is to lower pH with acid, then add baking soda which will raise TA a lot and pH a little. If you've got low pH right now, you should be able to safely add baking soda to raise TA.
I think you can use the baking soda to increase TA, but then will probably need muriatic acid to lower pH. Actually I believe the process is to lower pH with acid, then add baking soda which will raise TA a lot and pH a little. If you've got low pH right now, you should be able to safely add baking soda to raise TA.
I haven’t used muriatic acid - didn’t want to add yet another chemical to my arsenal! But maybe I should.
So it was said that my pH will be more stable if I raise the TA.
I am always fighting low TA . It wants to be about 40-50 and someone on these boards said to leave it.
I am always fighting low TA . It wants to be about 40-50 and someone on these boards said to leave it.
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