2nd water dragon question

Ok, now that I have decided to get a water dragon, I am trying to plan to build or convert a piece of furniture to a vivarium for him. So my question is how much space will he need? How do I know if a piece of furniture is big enough?

Any thoughts would be appreciated

thanks,

I think that something about the size of a 55 gal aquarium might be big enough, so you're looking at about 48x24x24. You could go higher in the height since they do climb. Also you'll need silicone to make it waterproof.