I have a 54 Oceanic glass corner bow, and a 105 AquaVim glass corner bow. Both use 5/8th inch glass, both have clever features, and both are quite sturdy. They are heavy. The Oceanic tank itself is 88 lbs empty, sans stand, and the AquaVim, which also has 5/8ths inch top bracing with access ports, weighs well above 200 lbs empty and the whole rig with stand and canopy is taller than I am---we didn't get an independent weight on the thing. Two strong men and a strong woman sweated a bit getting it onto the stand base. Both have been good tanks.