Thank you sir. Mr. Wizard. I've got a Hydrotek Vac system I'm going to be using for the first time soon. The system wasn't terribly expensive, for an entry level machine. The filters seem to be where they plan on killing me. I think it is like the printers they give you with new computer purchases though. They figure they will "give" you the printer and then they'll charge you so hard for the toner that it knocks a hole in your pockets.