Zero TA and Low Ph Problem

[Ishmael1980]

Hello Guys,
Tested my 520gal spa yesterday and found the Ph was over 8 (I checked the TA about 4 days ago and it was 30). I had planned to use the muriatic acid and aeration method to bring it back down but I misread the calculator and added way too much acid( 7.9oz).

After an hour of running jets and bubbler here's what I got:
Bromine: 4
Ph: Below 7
TA: 0
CH: 100


Any thoughts on how I can get this back in balance?
Thanks

 

[woodyp]

Welcome to the forum. You can raise your PH by using plain old 20 Muleteam Borax and raise your TA by using plain old baking soda----both from the grocery store.

 

[Ishmael1980]

Thanks Woody. Should I work on getting the PH up first or the TA?

 

[JoyfulNoise]

I would add baking soda to get the TA up to 50ppm and then run the jets on the hot tub to aerate the water and raise the pH. If you raise the pH back up to normal with borax and then add baking soda on top of that, you could wildly overshoot the pH as aeration of water with even low levels of carbonate alkalinity will cause the pH to rise.

Just add baking soda and aerate. Then retest and see where you are.

 

[woodyp]

What JoyfulNoise said for your spa.

 

[Ishmael1980]

Thank you very much for the help guys!