New pool -pH

[sdockus]

a general question...
Pebble tec SW pool. Is it normal to be battling pH two months in? Rises to 8, add 2 pts acid, back to 7.5. Few days later back to 8.

 

[lightingguy]

pretty normal. Your SWG is also a source of rising PH so it's a double whammy.

What is your TA level?

 

[duraleigh]

Welcome to the forum :lol: Yeah, pretty normal. It may help you go a little longer between additions to take it down to 7.0 - 7.2 and let it go up to 7.8 before adding. 8.0 is a little outside the range of where you should be.

Lightninguy has another good idea for you, too. Keeping your TA low can be helpful. Report your current reading.

 

[HouTex]

I'm at 7.5 months and my pH is still rising. I'm going through a gallon of MA every 7-10 days. I'm told that lowering the TA to 70 or even 60 should help. I'm at 70 now and I'm hoping the rise in pH will slow down.

 

[sdockus]

Thanks for the input.

I should add that I'm not comfortable with SWG output. Initial set up @ 45. I seeing a rise in Cl and pH since last addition of acid.
Checking NaCl between Leslies, P-a-P analysis, and Aquacheck strips. SWG is reading higher (approx 400 ppm) than the freebees. The Strip tests more in line with the outside analysis. Any thoughts?

 

[JasonLion]

Salt tests are all fairly imprecise, getting results that agree within 400 is doing fairly well.

Fresh plaster will continue to increase PH, TA, and CH levels for up to a year.

What is your current TA level?

 

[sdockus]

Fresh Tests (TF-100)
ph 8.2
FC 3.5
CC 0
TA 80
CA 320
CYA 50
NaCl 2700
Temp 90
Reduced SWG output to 35% this AM. Cl up .5

 

[duraleigh]

Keep that pH below 8.0

Trust your own testing and assume yours is the most accurate.