First off, liverock came in yesterday, and was very impressed, lots of growth on the rocks. I placed it in the tank and am now waiting for the cycle to occur. I checked the ammonia today and it gave a reading of 0.5, i was wondering if i should maybe help the process along and add a shrimp, will that effect the growth on the rock? or will the 60 lbs of liverock be enough to cycle my tank.