Closing instructions for curing plaster

[Butterfly]

Maybe I should say, "When the water temp drops below 60 degrees, do we need to do anything other than the ordinary closing procedures if we have plaster still curing?" :?


Joyce

 

[KurtV]

Since your new plaster went in in March, I think it's safe to treat it like
old plaster.

 

[Butterfly]

Thanks, Kurt, but when is it going to start ACTING like OLD plaster? I still add MA every 3 or 4 days....7 or 8 cups per week! What happens to the chemistry when the water temp is below 60 degrees?

Joyce

 

[JasonLion]

As the water cools all of the chemical reactions slow down. You should start seeing this even before it gets down to 60 degrees.

 

[KurtV]

Thanks, Kurt, but when is it going to start ACTING like OLD plaster? I still add MA every 3 or 4 days....7 or 8 cups per week! ...

Joyce

I don't know. Mine is almost two years old and my pH is still constantly rising. Even with a total alkalinity of 60-80 ppm (depending on the pH, 50-80 ppm borates, and using tri-chlor most of this summer. Some pools are just acid eaters.

 

[Butterfly]

Kurt, would you tell me what your water chemistry did last close/winter and what you did about them?

TIA, Joyce

 

[KurtV]

I don't close as the climate here is mild. I probably added acid once a week or so from November through March/April. I try not to fight the pH too much. I let it drift up to 8 or even a little higher and then only take it back down to 7.8 or so. I use a lot less acid this way than when I was trying to keep the pH down in the 7.2-7.6 range.

 

[Butterfly]

Kurt. We don''t 'close', either. Will keep an eye on the pH throughout the season(s)

Thanks for your comments.

Joyce