I recently tied a frag tank into my main display's sump and am curious what people are doing to make sure the coral in their frag tanks are fed. I don't plan on putting any fish in the tank, and I run filter socks so the water going to the frag tank would have minimal fish poo in it, if any. I feed my display 1-2X a week with reef roids, but of course those coral also have access to fish poo and small pieces of uneaten fish food daily. How often should I be feeding my frag tank? And is a premade powdered coral food enough?