Finished Building My New Pool

cjbyrd

Member
Mar 24, 2016
14
Destrehan, Louisiana
My builder just finished my new pool and told me not to worry about the chemicals right now but to add 1/3 of a gallon of muriatic acid once a week and the the Ph will start to balance out. Does this sound right with start up of a newly built pool ? I've been testing my chemicals weekly even though they told me not to worry about the readings right now and the Ph is still real high, around 8.6 after 6 weeks of adding the 1/3 gallon of acid.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,753
Northern NJ
What type of pool? How long since water was added?

Please put details of your pool in your signature.

Post a complete set if test results and we will advise you on what to do. How is the water being chlorinated? pH should be lowered into the 7s.

I suggest you read ABCs of Pool Water Chemistry and download PoolMath to help you determine chemical doses.
 

cjbyrd

Member
Mar 24, 2016
14
Destrehan, Louisiana
Sorry, Pool was plastered and filled on April 10th its an 11,600 gallon pool with raised spa with a salt water generator. I'm not sure how accurate those ACE hardware store water link pool tests are but my readings today from them were FC 0.7 TC 0.7 CC 0.0 PH over 8.6 TA 94 ppm CYA 55 ppm. Salt levels are at 3000 ppm with generator running at 50 percent. all equipment is Jandy
 

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kimkats

Mod Squad
LifeTime Supporter
Jul 10, 2012
41,508
Tallahassee, FL
I am sorry to say that is not a good way to start your new plaster :( but we can help you over come it!

First the pH. It is going to be a battle to get it down. You HAVE to have a good test kit with enough regents to do many tests. For the pH you can get the Walmart test for pH but know you will need quite a few of the red dye for it. For all of the other tests you will need a much better test kit like the one listed above.

-pH battle- Using Pool Math as seen above set your target as 7.5 and your now as 8.2. Add as much muriatic acid as P.M says with the pump running on high. Let it run for about 15 mins. Then test again. If the pH is not in the 7s does again and repeat these steps until you get teh pH down into the 7s.

NOTE-your TA will go lower as you lower the pH so you will need to test it as well and keep it from crashing. Here is a link to what we use to adjust each level:

Once you get the pH down in the 7s keep a close eye on it because as new plaster cures it will push the pH back up.

Kim:kim:
 

cjbyrd

Member
Mar 24, 2016
14
Destrehan, Louisiana
Thank you for the info Kim. I thought adding the acid only once a week wasn't a good plan and figured my Ph should be tested and adjusted more frequently because my new pool already has scaling from the high Ph and parts of my new plaster feel like sand paper.
 

cjbyrd

Member
Mar 24, 2016
14
Destrehan, Louisiana
Should that scaling on the walls go away on its own once the ph and other chemicals are in check or will I need to brush it off with something more coarse than my pool brush? Also about how long after a new pool is plastered will the ph finally stabilize? I also want to add borax to my pool how long should I wait before I do that?