The cloudy water is due to a bacterial bloom which is very common in new set ups. Once the bacteria that is forming during the cycle of the tank(I am assuming you are in the middle of a cycle) figures out where it will best serve the tank, the water will become crystal clear again. However, this could take anywhere from 2-8 weeks. Water changes will not help get rid of the cloudy water but do still keep up with the water changes as part of your normal tank maintenance. I would also test the water since you will need to know where you are in the cycling process of this tank.
Marinemom