Im leaning toward installing a DSB, because I like the way it looks. I don't like my shallow ones, and barebottom is out of the question for me. I'm doing a big re-aquascape soon and it would be the perfect time. I know anything works until it fails, but that is true of so many other things in our tanks. I don't really want to start a debate, but I'd like to know: 1. What us the optimum depth? 2. Is there maintenance that can be employed, or is it hands-off untill the bed us full.