I recently bought a 135 gallon vivarium that came with 5 bicolors. The viv didn't have any kind of false bottom, no background, and needed a little bit of work. I've decided to build a 40g viv for the bicolors. Once the 40 is up and going and the bicolors are set, I will be redoing the 135. My question is im not sure what to put in the tank. I'm not into mixing species so I'm looking for a larger group. What are your guys thoughts?