If you already have a reef there is almost no reason not to try. Whole setup costs $26. I just took a little sand and a small rock from my 'fuge, grabed a few crabs, snails, pods and bristle worms and put them in. Last night I also took a mushroom out of the tank and put it in the nano. It hasn't opened up yet though. But the point is it costs about nothing -sounds unfamiliar in the salt water hobby huh?