For whatever reason and I'm sure it's operator induced I've got air in my returns big time. Now as a result of going BBB the Hayward chlorinator is not in use. It also had it's position shifted during a replumbing repair some time ago. It actually sits higher inline above the line coming out of the heater before going to the returns. Is the lid on that supposed to be absolutely air tight? I know there is the little feeder tube inside but all the water does is run in and out with no chlorination taking place. Am I not getting enough water into that feeder tube in the chlorinator and that can be sucking air? I've tried to tighten anything that may be suspect but I'm obviously missing something. Also, there is water on the concrete pad that seems to originate under the pump. the pump was new last year so is it possibly a bolt tightening issue? Any insight is greatly appreciated.