Adding Multiple Chemicals

Can I add CYA, CH and MA at the same time?
Yes although depending on what your pH is I might hold off adding MA until your CYA dissolves and you retest.

CYA is a mild acid and will lower your pH a bit.
 
Why? CH has no effect on pH.
After adding Calcium Hypochlorite a user should always wait 24 hours before adding chemicals that would alter their pH. Adjusting pH or Total Alkalinty after adding Calcium Hypochlorite can cause the calcium to temporarily cloud the water.
 
My apologies, I am not adding calcium hydrochlorite. I am adding calcium hardness increaser. Can I do all at once in that case?
 
My apologies, I am not adding calcium hydrochlorite. I am adding calcium hardness increaser. Can I do all at once in that case?

Yes, at the worst lowering the pH will cause some temporary cloudiness which will clear up in a few hours.
 
Lowering pH is fine.

Raising pH is the problem where calcium can react with the pH increaser.

Also, always give different chemicals plenty of time to disperse before adding a different chemical.

Ideally, brush the pool thoroughly after adding a chemical.
 
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.