Closing chemistry recommendation

[Watermom]

And, remember, it isn't required to use polyquat upon closing. I never do.

[CarlD]

And, remember, it isn't required to use polyquat upon closing. I never do.

That's right. We use what has worked for us consistently. I use polyquat, Watermom doesn't. We both open to clean pools.
Who is right? Both of us.

[JimK]

And, remember, it isn't required to use polyquat upon closing. I never do.

Do you add any chlorine during the time between closing and opening?