Hi all, i'm in the process of installing an internal overflow to a 29g tank, the overflow is going to be installed inside the tank, on the back of the glass, over a 1" bulkhead....the overflow is going to be the kind that customking builds....i was just wondering if anyone has done this before that can share some knowledge, or even better pictures of your set up, so that i can get a better idea of what to do or how i should do it....