Newbie here. I had to drain my pool's water and refill. Once it got about a foot or so before the desired level, I turned off the hose and turned on the auto fill. I didn't catch the issue until my pool was overfilled--almost to the top. I turned off the auto leveler and dumped the water back to midway on my tile and have been concentrating on my pool chemicals. Now, I'd like to turn back on the auto leveler as it gets warmer outside here in Scottsdale Arizona but I don't trust it. I'll attach a picture, it's not as gross as the pic looks. It's been 8 years and never changed or adjusted. Should I change it out or is it a simple setting? How do I adjust the setting as my water level is about perfect right now?
Recommendations would be great as I don't know much about pool maintenance and am learning daily. Also, how do I know if it's a 3/8 or 1/2? If I replace, assuming brass is the way to go? Any suggestions on where to buy (Amazon)? Direct Links? Thanks.