I was checking out some huge tanks, check out this one
Shortcut to: http://www.anythingfish.com/Todd's%20Cement%202500/Todd's_Concrete_2500_Gallon_Aquarium.htm
Shortcut to: http://www.anythingfish.com/Todd's%20Cement%202500/Todd's_Concrete_2500_Gallon_Aquarium.htm