Join Date: Jul 2012
Location: Baltimore-Washington Metro Area
As long as the glass cover closes, why cut the driftwood?
Lay the substrate around it while it sits on the bottom. Shallow the substrate a little underneath to allow fishes to swim under and it'll be fine.
The top is where the interesting visuals happen, so by cutting it down, I think you are referring to cutting some off the base. Save yourself the trouble and just bury the base where it sits.