Sorry it has taken me a week to respond, I do a weekly water change and do about 20-25% water change. All my levels are the same, Nitrites at 0 Amonia at 0. I run a fluval 305 and change the water every two weeks and clean all the sand out of it. I was keeping my temps at 82 so that could be why. This is all making since to me know and thanks for all the feed back you all have been helpful.