I moved my tank and had to take most of the water out and rock and corals out.
It has been over a full day and there is dust all over my live rock and I cant seem to get it out, any suggestions
Try to use a powerhead to blow the dust and debri higher in the water column so it hits the overflow (assuming you have one). Your going to want to a water change also at this time.
If you have a mechanical filer use it. I moved my tank and use my 1 micron filter to clean the tank. Still took days. As a matter of fact today I am moving my tank and this time I am throwing away all the dirt that I can.
Scott