This is a discussion on tank weights within the DIY Aquarium forums, part of the Aquarium Resources category; -->
I need to the weight of a 225 gallon and a 110 gallon empty...
Try to find a manufacturer of the tanks as all tanks are different. If in doubt Oceanic makes the heaviest tanks. AllGlass makes decent tanks and Perfecto makes thin tanks. SO look up the specs on Oceanics website and plan for the worst case.
It changes for all tanks As some one just said find out the manufacturer and go on there site or some thing failing that you will just have to measure the thicknes and the amount and estimate