pH reducers

Muriatic acid is the best pH reducer.

Sulfuric acid and sodium bisulfate are other acids that reduce pH.

Carbon dioxide lowers the pH without affecting the total alkalinity. It gets lost to the air, so it's mostly a waste of money.

I would stick with the muriatic acid.
 
And if you read the ingredients on all those reducers, it is just the stuff that James mentioned.
Although that Green Envy very well might just be diluted muriatic acid.
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.