We only have a test for the: NITRATE, NITRITE, TOTAL HARDNESS, TOTAL ALKALINITY, AND PH. I will get one for the ammonia this week. Should I continue to leave the tank empty until the spikes in the levels occur and go back down? One more question, I was unaware that putting my upside down catfish (Rocky) and black ghost (“night of the living dead”) together was not good. Thank you for that information!!! They both are doing great both are very energetic great appetites for blood worms and have amazing personalities ( my black ghost has actually put little “Rocky” in his place and they get along great, is it ok to keep them together if they are doing well? I would say the tank is more suitable for the black ghost but “Rocky” zips around playing and eating, he’s like a little rocket. Again