I went into pets at home today and get my water tested. My pH and everything was fine but my ammonia level is in between 0.5 and 1. The woman who did the test told me I had to empty the tank and refill it. I just laughed and left. Anyway, haven't been able to get any pure ammonia but as soon as I do I will get my ammonia level up to 5ppm and see what happens.