Can I stack a standard 20 gallon long tank on top of a visionarium?

[neubauer geckos]

I'm considering getting a visionarium,but I want to be able to save room,so could I put my standard 20 long on top?the visionariums are stackable,so I think it will work,but I wasn't sure.if it won't,I'd there any way I could modify it to?thanks!

 

[acpart]

These are the things you have to take into account:
--if you stack them directly on top, will there be enough ventilation? I suspect there will because the visionarium (I have one) has side ventilation
--is there a way to do it so there's no chance that the top one will fall down (see below)?
--will you be able to reach into the top tank to access its floor (this will be impossible if the whole thing is too high).
--will you be able to heat the 20 gallon safely if you've got the 2 tanks stuck together as I describe below? Will the visionarium get too hot with a UTH above and below?

One idea for stacking the tanks: Put velcro around the top of the visionarium and the bottom of the 20 gallon and stick them together.

Aliza