Some background info: Pretty sure I had a bout of columnaris...lost 4 panda cories. I used Maracyn and Maracyn II. It effected my cycle. I started getting ammonia readings and my nitrate level went down quite a bit. So 8 days ago I added a huge bottle TSS. I have used TSS to cycle my tanks, help when I add new fish etc. Before adding TSS I had the following: ammonia = .50 nitrite = .50 nitrate = 5 I just tested my tank (3/16) and I got the following: ammonia = 1.0 nitrite = 0 nitrate = 40 So now I'm wondering if I should add Prime daily and just wait for my tank to get rid of the ammonia...since I certainly have enough nitrates to do the job - correct? Or do I just wait for the TSS to catch up in a few days? Or do I need to do a big water change, eventhough I added TSS 8 days ago?