[carym]

I guess I would question the sand in the display again, like Nativeman said you will have a sand storm, and just because you want chromis and crabs doesn't mean you have to have sand, I do like the idea of the DSB in the sump/refugium. I am a strong believer in DSB, I just know that the frag tank I have it difficult enough to syphon without a sand bed, so I wouldn't want to try it with one.