A planted tank would not be out of the question. But really want a 'wet pet' with some personality. Would love to try a puffer but none of the smaller species excite me. I want a Fahaka but this would not work with the 72g for life. I would need at least a 24" x 48" footprint and 120g. Not that I dont 'want' another tank but I have to answer to a 'higher power'..... my wife!