My PB closed my pool for me. We blew out the lines and filled with antifreeze. He put plugs in the skimmers and I then installed gizmos. This was 2 weeks ago. I just opened both skimmers and now we have about an inch or so of water in each skimmer. It hasn’t rained a bit so I’m guessing the skimmer plugs aren’t water tight. Should I be concerned? Should I add more antifreeze to the skimmer?