I dont know about that. I have done my homework plus everyone that I know with a dsb has an outstanding tank. I heard more horror stories about calerpa than I did about a dsb. Its only going to be 6" deep. And the space is only 12"x12". The entire ocean is 1 big deep sand bed. Think about it!Don't do a dsb area "Please",,lol they are over rated and nutrient sink,.. Just use some rock and some Form o9f caleurpa prolifera I can mail you some..