Hey, I got a 29 gallon tank for Christmas and set it up the same day. I had heard about fishless cycling before, but I have never used it. I put fish food in to put in ammonia and turned up the heat to about 82 degrees F. I didn't leave the light on, but I turned it on today. Today I got back from a 4 day trip to my grandparents' house. I checked the nitrite and nitrate. Both were at 0. Then I checked the ammonia. It was also 0. There is decaying fish food at the bottom of my tank. When I put in some decorations I got for Christmas at my grandparents' house, all the decaying, fungus covered food got stirred up. So I scooped most of it out with my net and put in some new food. Should I just go to the store and buy some pure ammonia to put in my tank? I thought the bacteria in the tank would have converted some of the ammonia to nitrite by today, but there's not even any ammonia in my tank! What happened? I added some Stress-zyme (beneficial bacteria in a bottle) to my tank today, I hope that helps. My tank is cloudy, so shouldn't there be some ammonia or nitrite or nitrate?