I wanted to say hi to everyone. Great site! I wish all this info was around when I had my common atlantic octo. I had him "or her" for 16 months. I have had many aquariums over the years but that one was the most fun. I am ready to do it again. I have A 90 gal and A 125 gal that I can set up for an octo. I know they all are nocturnal but which one is more likely to be ok with being out during the day. I plan on setting this up in the waiting room of my auto repair shop. I know to run low light and I have lots of equipment "protein skimmers, sumps, pumps ect. Thanks