My fish in the "floor tank" don't do a whole lot other than sit in the corners when I'm watching them (they seem to be a lot more active when I walk into the room after leaving for a few minutes). Currently the water is unfiltered so the only water current is from a single bubble stone (I will be buying a filter as soon as I get my next paycheck!), so there's little in forms of that stimulus. How do I get these fish to move around more?