My pool was put in late last year (First week of Sept). My PH was 7.8 and a little higher and I kept adding MA to bring it down. So far this year since I opened last week it was 7.5, but has dropped to 7.2 and staying there. Is this OK?
PH Numbers
- Thread starter kywildcats
- Start date
Yes. 7.2 is okay for swimming, and since your pool is vinyl, you don't need to worry about plaster etching.
Low TA caused by a whole lot of rain or snow dilution? Did you use pucks over the winter? What are the rest of your test results?
I will post a full set of numbers shortly. I am waiting for my sample water to come up to room temp before checking CYA. Thanks!!
Here are the numbers for today.
FC: 7
CC: 0
PH: 7.2
CH: 100
TA: 70
CYA: 60 (Slowly making it rise to 70)
Water temp: 60 (Water sample was brought in house for 3 hours before testing)
Yesterday FC was at 6. I turned on SWG to 15% and ran the pump for about 4-6 hours, and it raised it to 7
Water is crystal clear!!
No Pucks used over the winter
PH just barely changes color from my well water. Less than 6.8 for sure
FC: 7
CC: 0
PH: 7.2
CH: 100
TA: 70
CYA: 60 (Slowly making it rise to 70)
Water temp: 60 (Water sample was brought in house for 3 hours before testing)
Yesterday FC was at 6. I turned on SWG to 15% and ran the pump for about 4-6 hours, and it raised it to 7
Water is crystal clear!!
No Pucks used over the winter
PH just barely changes color from my well water. Less than 6.8 for sure
borjis
LifeTime Supporter
my ph tends to drift down if it isn't at TA of 80 or slightly higher.
I have vinyl and about the same volume pool as you, try adding 2 lbs of baking soda, then test ta & ph.
get the ph up to 7.5/7.6 with mule team borax or soda ash (shouldn't take much, maybe a cup). should hold ph steady then.
I have vinyl and about the same volume pool as you, try adding 2 lbs of baking soda, then test ta & ph.
get the ph up to 7.5/7.6 with mule team borax or soda ash (shouldn't take much, maybe a cup). should hold ph steady then.
This is what I was told to do when checking CYA numbers. I can't tell you about the other numbers, but somebody will chime in shortly I'm sure!
Yes, the CYA test doesn't work well when the water sample is really cold. Let it warm up to 70 or better before testing.
So the good news is, I only added half of the stabilizer the calculator told me to add, in a sock, in the skimmer.
borjis
LifeTime Supporter
Get a 1 gallon bucket, fill with pool water, get a stir stick, pour ALL the baking soda in while you stir it around.
slowly pour into the pool deep end about 1 foot away from the return jet. (while pump is running)
rinse out bucket
do the borax or soda ash same way.
Keep the pump running for an hour then test. ph & TA
Here is a handy page from Pool School about chemicals, what they do and how to add them. Pool School - Recommended Pool Chemicals
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