Raising the water level

CatalanBull

Bronze Supporter
Apr 3, 2025
29
Corona, CA
Pool Size
13500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Hi,

I want to raise the water level of my pool to where the calcium line in the first picture is. However, I was adjusting the autofill valve and noticed a hole just behind it that's half filled with water. Is that an overflow drain?

I'm worried if I raise the water level it might just drain away through that hole. It's strange that the hole already has water in it, even tho the pool's water level is currently about 3 inches below the pool main overflow drain, shouldn't they be level?

Thanks,
Roger

IMG_4840A38C-38F3-4AAE-8119-6FBA368FC9B9.jpeg

IMG_3553.jpeg
 
Roger,

I had assumed that if you had an overflow in your auto-fill that you would not have an overflow port in the pool.. :scratch:

If they are both overflow ports, the the lower one wins... :mrgreen:

I have a fill line in the back of my skimmer.. To keep junk out of it, I just took a short piece of 1/2" pvc pipe and glued a cap on one end.. I stick that into the hole (No glue) so I can remove it when I want to use the fill line..

You could do something similar to plug the hole in the back of your auto-fill..

Thanks,

Jim R.
 
Roger,

I had assumed that if you had an overflow in your auto-fill that you would not have an overflow port in the pool.. :scratch:

If they are both overflow ports, the the lower one wins... :mrgreen:

I have a fill line in the back of my skimmer.. To keep junk out of it, I just took a short piece of 1/2" pvc pipe and glued a cap on one end.. I stick that into the hole (No glue) so I can remove it when I want to use the fill line..

You could do something similar to plug the hole in the back of your auto-fill..

Thanks,

Jim R.
Great tip, I’ll do that, thanks!

Roger