I've got the two in my fuge as well, but I've been working on building the bed up deeper. I have a lot of shells that I'm breaking into pieces to give that extra rubble for the pods, and the bed itself is about three inches.

Back to the original question, if you place your fuge on top will it be a 'display' styled fuge or hidden away? I had toyed with the idea of an aesthetic fuge like those hang on the side things they advertise.