High pH - used wrong soda

[alosito]

I used PoolMath to calculate the amount of soda that needs to be added to bring my pH from 6.8 to 7.4, but I didn't pay attention that it is Soda Ash that was recommended and not Washing Soda that I used. It has been a day since then with a total pump run time of several hours. My pH is now 8.2. What should I do in this situation? Below are test results of this morning. What should I do in this situation?

FC: 3
pH: 8.2
TA: 90
CYA: 50

 

[duraleigh]

Assuming your testing is correct, Lower the pH down to about 7.5 with muriatic acid. Test about an hour or so after calculating and adding the dose.

 

[JamesW]

didn't pay attention that it is Soda Ash that was recommended and not Washing Soda that I used.

Soda ash is washing soda. What exact product did you use?

What is the TA?

 

[alosito]

Soda ash is washing soda. What exact product did you use?
[/QUOTE]
Arm & Hammer Super Washing Soda

What is the TA?

TA: 90

 

[alosito]

Assuming your testing is correct, Lower the pH down to about 7.5 with muriatic acid. Test about an hour or so after calculating and adding the dose.

My local Home Depot sells HDX 2 x 1 Gal. Swimming Pool Muriatic Acid for $11. Is it good enough?

 

[BowserB]

My local Home Depot sells HDX 2 x 1 Gal. Swimming Pool Muriatic Acid for $11. Is it good enough?

Check whether it is 15 or 31%. The latter is a better value, normally, since the price is often the same but you use half as much.

 

[Donldson]

Yes, that washing soda is the same as soda ash. It's all sodium carbonate.

Odd that your pH would be that low with TA that high. What are you chlorinating with? Speaking of chlorination: raise your FC. FC/CYA Levels

 

[JamesW]

A pH of 6.8 doesn't make sense with the TA at 90. Probably test error.

Why would your pH be that low?

How are you testing?

 

[alosito]

How are you testing?

TF-100

 

[alosito]

Odd that your pH would be that low with TA that high. What are you chlorinating with?

HDX from Home Depot.

 

[JamesW]

It's unlikely that the pH was that low unless you have used acid or trichlor tabs.

Be extra careful with test procedures. Be sure to rinse before and after doing every test.