I went to a LFS then and they suggested going without sand on the bottom of the tank since I am will be using live rock in my tank. He said it will just be hard to clean. Is this true? Has anyone else used this method? I like the look of sand? I was going to use dry sand because I will be using about 80 lbs of live rock and 60 lbs. of base rock to start my 150 Gal. What are your thoughts?