CH at 220. Increase?

What is the CH of your fill water?

220 is close enough to be ok.

If you have very low fill water you might want to raise CH a bit.

If your fill water CH is 200+ then you can be ok.
 
What is the CH of your fill water?

220 is close enough to be ok.

If you have very low fill water you might want to raise CH a bit.

If your fill water CH is 200+ then you can be ok.
Are you referring to the water that goes into the pool? I’m not sure. How do I test that? Just pour some water from hose bib into a cup and test?
 
Are you referring to the water that goes into the pool? I’m not sure. How do I test that? Just pour some water from hose bib into a cup and test?
Yes

You should know the pH, TA, and CH of your pool fill water.