Errr, I doubt his frogs can float through the air. The increased surface are provided by the multi-dimensional background alone helps even this out...Half of the space for the frogs is taken away by your construction.
If you add water, which they dont like, you take away even more PRECIOUS space from the frogs.
On behalf of the frogs, reconsider this.
This viv might by great for YOUR eyes, its not for the poor animals living in it.