ChriX said:
Why would you have to remove all the silicone? Why not just make a hole and put the pipe in, doesn't sound too hard to me. I'd say go for it if you want something original, make sure the fish can fit through the pipe though hehe
Oops, I misread what he was meaning.

The only problem with drilling is you can't on tempered glass so that might put a stop to it there.
I don't know if his tanks are tempered however. If they aren't, then it's a cool idea. I've seen them before on 10 and 20 gallon tanks.