How to clear dusty water? (pics)

[LockeOak]

So I've finally filled my new 50G tank. It has about 40lb. of dry rock from marcorocks that I drilled full of holes for mounting frags and stacking with rods. After filling the tank, the water is very cloudy, white with a slight brown tinge. (Nothing alive in the tank at all). Mostly rock dust from all the drilling with some of the dead material from the rocks. This is what I'm working against (forgive the temporary wiring job):



How can I clear it? Right now I have a phosban reactor with a media bag of carbon running on it (no phosban) and a MJ900 with its output blowing into a brick-sized block of foam from an Aquaclear filter (pics below). I don't have any filter socks, would some media bags wrapped around my overflow output help?