New member saying hello.

Came across this forum page and needed to join. Can't find good answers with google alone. So I've bookmarked it and will visit often. Pool owner for over 8 years general contracted the build myself. My newest stupid problem was last night. Air bubble in the return. Finally this morning I should have "KISS", keep it simple stupid on troubleshooting. Last night I was purging the skimmer and drain lines for 2 hours only to find that my air bubbles were caused from the pump filter cover o-ring was shot! Lesson learned, to start with the simple stuff first!