Brand new to pools and need some assistance please. I do not know what the jandy valves control the one in the back nearest the wall I'm sure goes to the skimmer/bottom pool drain but I'm not sure what to set it at. next my biggest question is the jandy valve in the front that goes to the solar panels on the roof! If I leave it at it's current setting what is it doing? If I turn the jandy valve to the left so it CLOSES the pipe on the left my filter pressure jumps to 30PSI if I leave it where it is now it runs around 10psi. I would like to use the solar panel since the water in the pool I cold but I'm not sure where to turn the jandy valve. Next when I shut the pool pump off I can hear all the water come rushing down from the solar panels and back into the pool is this normal or is my check valve broken? I also have 1 jet that is blowing bubbles I have rebuilt both jandy valves and replaced my pump motor with a bran new 1hp motor I also just replaced the square seal on top of the pump cover and it has not fixed the bubbles coming out of 1 jet. Thanks