Change in pH effect vinyl liner

[Her pool boy]

I recall hearing early in my pool owning days before I found TFP that lowering your pH too fast could damage your vinyl liner.

I don’t recalling reading anything here on lower your pH in stages so thought I’d see if that is a myth or truth.

The reason I ask is I need to lower my pH from 8.4 to 7.6 and pool math says I will need 1 litre of acid. Can I just dump 1 litre of muriatic acid in the pool or should I do a 1/4 litre at a time over several hours?

thanks.

 

[Mdragger88]

Lowering ph below the 7’s can damage your liner as well as allowing it to stay below 7.
So long as you pour the ma slowly in front of a return & brush the area not allowing it to sit on your liner it will be fine.
We don’t recommend “dumping” acid in.

 

[Her pool boy]

I didn’t mean literally “dump” and I should have said “put it all in at one time”. This isn’t my first time adding chemicals but I appreciate your response as it kinda answer my question. Thanks

 

[Mdragger88]

I didn’t mean literally “dump” and I should have said “put it all in at one time”. This isn’t my first time adding chemicals but I appreciate your response as it kinda answer my question. Thanks

Just trying to be thorough as these threads are used as a reference for anyone who googles even if they never make a post.