OK, so...the pool is up and running--not only that but it's full!! of course, this means I have more silly questions I turned the filter off tonight, and was shocked when my skimmer tranformed into 'ole faithful--spitting up water like I never knew possible, if the cap hadn't been secured on I'm sure I would have been retrieving it from my neighbors yard!! is that normal to have water spit back through the skimmer when you shut the filter off? should I have closed the ball valves before shutting it down? also, I have a cartridge filter...do I need to be releasing the air from it everytime I turn it back on? the 1 page (yes, one page, guess they couldn't spare the paper) instruction manual spends more time on installation than running directions so I'm totally lost