PH Help

[g3lo]

Hi,

So the pool has been amazing since I started the TFP method. However, I noticed my PH keeps jumping up after 3-5 days of lowering it.

I lower PH to 7.2 next week its 7.8-8.0.

TA 100
CH 150
FC 6.5
TC 6.5
CC 0
PH 7.8
CYA 60

 

[Cinic]

pH has a tendency to rise especially with higher TA numbers. Try lowering your TA to 60 or 70 and see if the upward pressure slows down. My pH is much more stable at 70 than it was at 100.

http://www.troublefreepool.com/content/129-how-to-lower-lowering-total-alkalinity

 

[g3lo]

Ill try to lower it to 70. I thought it was supposed to be around 90

 

[Texas Splash]

As long as you keep it within the range for your pool type as noted on the Pool School - Recommended Levels page (50 or above) you are fine. Each pool reacts differently, so once you get to a point where the pH seems to remain fairly stable, then you can just leave the TA alone. When you try the acid/aeration technique, you can bump pH down to 7.0 then aerate. Going that low seems to help some members move the TA better. Good luck.

 

[domct203]

Ill try to lower it to 70. I thought it was supposed to be around 90

There really is no magic number for TA. Concentrate on your PH, you'll likely find that when you get the rise to slow way down, and the TA has settled in the 60-80 range.

I'm lucky that my PH is rock solid at 7.4, even with my TA at 90-100ppm.

Dom

 

[MarianParoo]

Your TA is at the right level for a vinyl pool with no intensive water features when the pH stays the same over the long haul.

 

[crokett]

I'm lucky that my PH is rock solid at 7.4, even with my TA at 90-100ppm.

Dom

As am I. It's been just over a week for me and after boosting TA to 90 ( a little higher than I wanted) my pool as stayed at 7.4. My old pool the TA was lower but the pH kept rising.