it can be done to any tank but sometimes not good. i personally would say it depends on the manufacturer because the ones from petco/ walmart and such are very thin glass and i wouldnt do that. i had a 30 and a 55 that was half inch thick glass. the 55 had no bow and no center support from the factory.i wish i would have tried it on those before i got rid of them.
It should be fine. I have a 50 long that I did it with. It is now fully planted and looks great. Can't wait until the plants fill out the whole tank...
Do NOT take the bottom plastic off if your stand is a flat surface. The bottom of the tank must be "rim supported" and the plastic trim under the tank creates that. If your stand is only rim support you would probably be ok like that.