Hi all, Im hoping this community can help me. I just set up my first saltwater tank a couple of weeks ago. My local fish store told me to put in some Dr. Tim's wait a week and then come in to test my water and get my first fish for a fish-in cycle with a second bottle of Dr. Tim's. I used CarabSea LifeRock and the Arag Alive sand and when I had the water tested my Ammonia and Nitrites were a little too high to add a fish. Where did the ammonia come from? I didnt add any and as far as I can tell the liferock and arag alive sand arent supposed to have a source. I appreciate the help, total newbie here.