Thinking about buying a GrippaTank from GrippaMax here is a couple back catalogue films on the system if you have not already seen them. The first is the installation of a GrippaMax the second is GrippaTank explaining the system and meeting a customer who has had the system for only a week.
http://youtu.be/IJrO38Ok6Nohttp://youtu.be/U2Na6gzEbBs