ok i just upgraded my tank from a 55 to a 95 gallon tank, i didn't kill any bacteria during the switch i was still running the filter in a cooler. but back to the main idea my mbu looks lazzzzy he hardly swims around the tank just chilling on the driftwood his color is like faded? lol i cant explain it but his "design" the strips aint greenish no more its more like brownish?