Nice design, I would think as long as there is something to grab, like use aquarium silicone/ adhesive and some small wood strips. Or you can always use some type of branch to get up and not have that front ramp, just the two on the sides and the dip down. How are you going to attach the shelves? I have a huge tank that had a shelf before, I used metal shelf brackets, and just had different branches and other things to get up there.