Hi all, I bought my first home and it came with a 20x40 IGP. I'm a total newb to pool ownership and this site has been super helpful. The pool was installed around 20+ years ago and most of the equipment is old. I noticed that the skimmers suction is very very low. Way too low to vacuum. I've tried closing the cover on one skimmer and shutting the main bottom drain but not much improvement. Everything seems to be in working order and my pressure is fine. It's at 20 PSI and was told that once it gets around 30 to back wash.
Any suggestions would be greatly appreciated.
Here are a few pic of my equipment set up.