I have a 150g and have been cycling the tank for one month. I started with dead sand but 120 lbs of live rock and about 40 gallons from an existing tank. No fish yet. I've thown fish food in several times and have used a couple of the live bacteria cycling products. I still show no ammonia and no nitrate. Nitrates are about 35 ppm. I guess I should just remain patient but does anybody have any suggestions?