I agree, and then watching the fish of course. Except when you can't find them.. My little unknown bumblebee and my clown are hiding so well, that even going all around the tank and looking under rocks (visually, not moving them) I can't find them. Urggghhh, that is so frustrating. I'll have to be careful when I vacuum in case they are in the rocks. I put a tiny (like 1.5") piece of wood on top of some slate, just to see if it would draw him out, nope. Still soaking the new piece.the most fun is the setup in my opinion