Tony, this is normal with this substrate, it will probably take about a week to clear up but will become cloudy again if disturbed. Once it has been in there for a period of time it will become coated with bacteria which will help to keep it in place. I find it best to place my base pcs of rock on the substrate and my other rock on top of this at random, then come back and aquascape after the tank has cleared a bit, this may take a few tries before it is completed.
Steve
Steve