Tested for ammonia today - doesn't appear to be any. I questioned whether or not there was maybe a touch of green to my sample, certainly less than .25ppm, but Hubby said no way, there's no green in there - its just yellow! From what I have been reading, several people have indicated that the pool continues to eat chlorine well after the ammonia is gone. My experience certainly mirrors many of those I have read about, except that I can't seem to get it to end! The pool is unbelievably clear, don't think I've ever really seen it this clear before. I will be out of town Saturday - Wednesday, leaving hubby in charge of the pool - he has agreed to test morning, evening, and bedtime. Readings today were a little better than yesterday, but I still have an occasional CC just over 1.0 (otherwise 0.5 and occasionally just a hint of pink). And FC still seems to be disappearing at around 1ppm/hour - that may be a touch slower than yesterday. We'll see how tonight goes!