I don't use canisters but can't see why they wouldn't work withmost 3d backgrounds?
Not familiar with aqaudecor.
I have wood canopies on 3 of my tanks.
2 of my tanks I have suspended the lights and /or rest them on my versa tops(glass lid).The other I have my lights resting on the rim of canopy which measure the same as tank rim.
I built 2 of mine and one is an All Glass Aquarium(AGA) now owned by aqueon .
All wood canopies I have seen or built are open backed so any filter,wire ...... will work out fine.
Here's one I built for my 180g