I was filling the pool after removing the cover, enjoying a cold beer and decided to peek at the skimmer. While I was there, I removed the Gizmo (Why can't I invent such simple things and make a ton of cash?)
I noticed that, other than the line teh gizmo was sealing, there was another typical plug in there. Should I remove that one too? I was under the impression that there should only be one line in there.