I may be new at this hobby.... but i do know quite a bit about urine, believe it or not! Urine doesn't have free ammonia floating around.... ammonia is converted to urea by a complicated process in the body, and is filtered out of the blood by the kidney to make urine - along with a hell of a lot of stuff that's in your blood like water, salt, bicarbonate, vitamins, enzymes, minerals, antibodies, uric acid and other things the body doesn't need at the time. Your urine varies dramatically from day to day, and even hour to hour, as I'm sure you've noticed by the different colors & smells :shock:
Depending on what is going on in your body, your urine could be more acidic than normal, more diluted, have proteins, bacteria, etc etc etc.
Needless to say, no pee is going in my tank