Probably a dumb question, but I'm still in my first year so thanks for your patience:
Do I need to prime both the Skim and Vac Lines?
Last year, I never paid attention to the VAC line. I vacuum my pool through the skimmer's VAC line.
The other VAC line is on the side of my pool which is never used. I've never tried priming it with that valve. Should both be primed? Should I prime the pump in the VAC line position? Seems like if I do that, I'll lose the water in the other line.
One thing is different this year so far: After my pump is shut down for a while, my pump basket drains. It fills right back up when it's turned on so I don't have to prime it again. Last year, though, the pump basket held a full amount of water after it was turned off several hours. Maybe there is still air in my lines? And maybe I need to do something about that VAC line?