I set up a 55g and started the cycle about around Dec. 27th. Everything looked good until my ammonia spiked up to 8. I figured no biggie because it was fishless so wasn't hurting anything. No go. Month later its still up at 8, so i did a complete water change and checked again. Everything in the green, and i figured i'd check it again the next morning. Its now at 2.5 and it won't drop anymore. Everything was washed prior to putting it into the tank, both filters are new and i'm starting to go out of my mind. Any ideas out there?