i have a 265g reef that i am setting up and i want to get an octo for it. i know it's risky. i have read a few stories on how people have kept them in reef tanks. what do think is the best octo i can get that will be the most reef safe? i was think a very small octo. maybe a merc? maybe i'll get 2-3 mercs for it. or maybe a hummelincki or A. aculeatus? thanks in advance!