Fish Fan,,,, YOU are my second source... I am cycling my new tank using MicroBacter 7. I was instructed to add a 1/2 capful into my tank every day for two weeks, with no fish during this period. In my filter media chamber #1, I have a sock stuffed with poly-fil. In chamber #2 is a small bag of Carbon Pellets and a small bag of Ceramic Rings. That is all I currently have for filter media. Is that enough? My question now is "How does Ammonia get into the tank if there are NO FISH pooping there"? It seems that the Nitrogen Cycle would be better to perform with some fish in the tank. No??