Suction cups for moving large tank?

[tim the toolman]

Go to your local glass/window shop and offer one of the lakies a couple bucks to borrow some. I work for a window company and we have several and all good quality. Basically if the cups just have a flip lever to grab they are not very good quality. A good cup should have a pump shaft out the side and a separate release valve. That style can independently hold over 400 lbs per cup.