Check out this website, hopefully it will help:
http://www.vcnet.com/koi_net/dan.html ~ jan

On Sun, 4 Sep 2005 01:27:21 +0000, hawksight wrote:

My amonia levels don't even register, but my nitrites are at
0.8mg/litre. When recommended level is 0 to 0.5. and my nitrate is
between 20 and 40 mg /l the ph level is at 7.5

The pond is 3 weeks old and has sufficient plant life.

Have been putting in baterial treatments to ensure the waste products
are converted. do i need to give these treatments more time to work ?

Why is my amonia none existant but I have high nitrite? Can someone
explain the amonia to nitrite to natrate conversion process within a
pond in a way I can uderstand it (the books don't help) so I can get
the correct balance within my pond

Thanks

~Power to the Porg, Flow On!~