Adjusting PH and Calcium Levels. Wait time?

[Northern cannonball]

Hi Everyone,
I am going to lower my PH this evening. My Calcium level is around 170ppm, and as per my heating manual it should be 200ppm so I plan on raising that slightly.
I've read this Pool School Article and i advises not to adjust PH after adding Calcium Hypochlorite for at least 24 hours. How about the other way around? Should i still wait 24 hours?
Lastly is adding 30ppm of calcium really necessary for my heater or should I just step away and leave the calcium levels alone? (vinyl pool)

Thanks!

 

[duraleigh]

I am not sure I would raise CH. What is the CH of your fill water?

 

[Northern cannonball]

I am not sure I would raise CH. What is the CH of your fill water?

Hey Duraleigh,
Tap/fill water CH is about 120 ppm

 

[duraleigh]

Depending on your rainfall, you could go either way. The CH in your pool should increase gradually on it's own. I would monitor it monthly and add CH if you got a downward trend but I think it will slowly climb

 

[Northern cannonball]

Depending on your rainfall, you could go either way. The CH in your pool should increase gradually on it's own. I would monitor it monthly and add CH if you got a downward trend but I think it will slowly climb

thanks! Only a month until we close the pool for the season , so I may as well leave it.