Yeah, I conquer. I have one in my 90 gallon and it's by the grace of william shatner that he's in love with flakes, even with a good 60lbs of rock or so all I can really grow are amphipods... and he's not big enough to eat those yet.
In a 29 gallon biocube... Eh... I wouldn't do it, I really wouldn't. If you can find one that's taking prepared foods or you can get a continuous supply of pods in there... then you can think about it, but they eat pretty much from the time when they wake up to the time they go to sleep.