Normally my pressure gauge runs at 12-13 psi. It started out there this year but through the pool opening process it has moved up to 20-21 psi. After backwashing and rinsing, it only drops down to 17-18 psi.
Is this something I should be concerned about? I called the pool store and they asked if I put the pressure gauge inside for the winter. I hadn't. They told me because of that I need a new pressure gauge. Wanted to check with my trusty pool forum before I changed the pressure gauge. Is there something else I need to be doing/checking?