I have been reading for a long time and I am finally getting my tank for an octo set up. One thing I have read is that cooler temps are better for octos then warmer temps because it slows there metabolism and they live longer. Some of the stuff I have read says they need as cold as 60 degrees. This seems very cold to me for a tropical octo. Am I wrong here? Or is there some truth to this? Maybe I misread it and they are talking about coldwater octos... though I thought they needed temps colder than that. Clarification please?