After putting anti freeze down my skimmers and installing the plugs can I pour a gallon of anti freeze directly in the skimmer in case some water gets in the skimmer as winter freezes, I recently had a skimmer crack even though I’ve had the same company close it for the past 37 years, and there was an expansion bottle in there put a dry skimmer this spring because of the crack the winter water had leaked out before I opened, that’s why I’m asking?