What is this for? an extra opening my pool I don't know.

boots

Bronze Supporter
Aug 3, 2018
50
Jacksonville/FL
Here is a photo of a part of my plumbing I have no idea what it is for. It is next to one of my returns in the middle of the pool. Ideas? Thanks.

IMG_1680.jpg
 

Jhsparky82

Bronze Supporter
May 31, 2018
84
Appleton WI
Next to and slightly lower than the other jets? I have one like that. Mine is a pressure side vacuum port. I don't have a vacuum, so it stays plugged.
 

boots

Bronze Supporter
Aug 3, 2018
50
Jacksonville/FL
Cullebo, I have only the one pump motor. It's about a foot away from a return jet, same height. Just curious as to what it's for, since I am not the original owner and have no paperwork for anything on this pool. And this is my first time owning and taking care of a pool, steep learning curve. Thanks for any advice.
 

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