I've been trying to cycle a tank now for about 3 weeks. For most of that time absolutely nothing happened. Recently, I changed the water (about a 40% change) and then added six feeder goldfish and a few free-floating plants. I've added chlorine/heavy metal conditioner to the water previously (and then let it sit before adding it to the tank for changes), and I tried using Nutrafin Cycle live bacteria solution, but the numbers are still not changing. My readings have been constant with the pH remaining around 6.8-7 and Nitrites and Nitrates at 0ppm. The only thing that has changed is that the ammonia went from about .5ppm to 1-2ppm.