Ok. So, when I added my angels to my 55 gal tank, it set off a min-cycle which I have been trying to keep under control with water changes. So far, I have been able to keep the ammonia levels to .5, but have not been able to get it down under that. I have not seen any behavioral changes since the cycle started, and the fish seem to be just fine. My question is, are the angels likely to be tough enough to be able to ride this cycle out naturally? There is a lfs where I can get my hands on some bio spira if need be, but as you know it is kinda pricy. Thoughts?