My tank has been set up for a couple of days and the water is still cloudy. I havened added any liverock or anything yet. Just sand and salt. I have my powerhead running and an aerator. Will this problem clear up or is there something else i need to do. This is my first attempt at a reef aquarium and i really don't know what i am doing. I have done everything that i was told to do and i cant figure out what is wrong. Can anybody help.