I raised it up a few days ago. I am not a fan on my aqua scape It doesn't have the Coral space. I'll probably redo it.Just saw this thread. I started a Waterbox 20 cube a few weeks ago for my daughter in addition to having my own tank. Really like your aquascape. Is it just the picture or is your light only about an inch from your water surface? If so, I'd really recommend raising it's height for safety, light spread, and equipment longevity reasons. The instructions for your light probably have a recommended height. If not, 10 inches from water surface is pretty standard from what I've seen anyway.