I moved my 20-22" Aro yesterday into a 180, and now I am noticing a bit of gill curl. The tank has been up and cycling for sometime now and is only inhabited by a 20" marble cat. I check water parameters and temp before moving him and parameters were good. Today the outter gill membranes are some what curled and I am clueless as to why. Any suggestions as far as treating this aside from a tank change and areation?


