Thank you Luna! I actually watched your video for setting up this cage to get some tips
It looked easy on your video and loved the ideas. All I did in the end was recreate a similar set up I had had in the Barney cage for our first Syrian, with the roof tube/roof run from one side to the other shelf.
The second sputnik at the back was a desperate afterthought! I was supposed to have a shelf there but gave up trying to fix a shelf to the back wall. I did try with the cage top off but had had enough by then! That end of the tube should be resting nicely on a shelf.
Because I have the sputnik there instead, I then needed a ramp up to the sputnik as it's too high above the house - whereas at the other end it is partly over the shelf and not too high really.