Hi, perhaps you could give me your views on whether I am getting near the end of the fishless cycle. This is my first tank so I am a little cautious. I had readings this morning of 0ppm ammonia, 2ppm nitrites and 80ppm nitrates. I added ammonia to get to 4ppm and did a 50 percent water change. Anybodys views on whether I am doing it right would be appreciated. Thanks Dave.