i have a 40 gallon tank, with a cpr over flow, 10 gallon sump and a protein skimmer. i mixed up about 40 gallons of saltwater, i put my live rock and and sand in, and after a couple days my water became really murky. i turned off all my pumps and stuff to see if it was just the sand floating, but after 36 hours and its barely cleared up i dont know what to do. i stuck my hand in the water and it was really slimy? what should i do??