First off, you have to be patient. We all want to get those new fish and get them in the tank. Do this prematurely, and they will die. Second, I wouldn't use those bacteria in a bottle things to cycle your tank. They will end up showing you signs of the cycle, and even the completion of the cycle. But as soon as you add fish to the tank, you will end up with a mini-cycle and your fish will die. The best thing to do is find someone with an established fish tank and ask them to give you some of their filter media and a few cups of gravel. This will speed up your cycle the correct way. The only chemical you should ever use is Prime to condition your tap water.