So I'm about past the ammonia stage of my 5 gallon tank's cycle, and I'm a little concerned by how *fast* the nitrite spikes. I did a water change (50%) Saturday, and by yesterday afternoon the nitrite was already deep into the red. I had to do two changes (50%, wait three hours, then another 25%) to get it back to safe levels. This morning it's already climbing toward the mid-range again.
Is the nitrite supposed to spike that fast? Should I plan on daily water changes until it's through this stage? Or is something else going on?
Walter seems his normal self, but the nitrite level yesterday startled me, and I want to make sure he's safe.