OK, maybe I wasn't clear... the tank was established with ammonia. Just low on fish.
WAY---Back when I was cycling the tank I added the 10 ml Ammonia.
Now, in preps for adding more fish I added 1ml ammonia to 29gal which was set to take the tank to roughly .25 ppm
(less than .50 at any rate per the API ammonia test after 30 min of tank circulation)
The tank is still taking this to 0ppm nitrite in six hours, and still 0 at 12 hours.
During a recent ICH problem I had the current stock of fish had a serious test of their hearty-ness prior to getting in the 29 gal
tank... 15 total inches of various fish were added to a small 4-5 gallon tank whilst waiting for the big tank to got though its cycle... and every 12 hours the ammonia would climb in this small un-cycled tank to 2ppm+ with a 75% water change every 12 hours. This went on for three weeks until the fishless tank was ready. I did not loose any fish during that time in the 5 gal
tank and two weeks later with everyone now back in the 29 gal
Since all fish have proven their heartiness I felt a tiny boost of ammonia would simulate an extra fish and lessen the shock to other fish when they enter the tank.