I have been planning on a Bimac for some time, but after finding out that my 75 gallon tank was once treated with a copper based anti-ick medicine, the 75 gallon tank is not suitable for any inverts. I Think I will make it a FOWLR instead. I have a brand new 29 gallon tank sitting in a box. This tank was once filled with tap water just to see if they were any leaks in it. Is it still suitable for a octo or cuttle after being touched by tap water? (I am a newb to SW so expect dumb questions like this ) More importantly, what (if any) species of octo or cuttle fish will live comfortably in a 29 gallon tank?