i have a 70 gallon tank and was wondering what are my limited options? i know that the blue ring is extremely poisonous and definitely out of my interest but i don't know anything else beyond that? also i know that most are nocturnal are there any small day time octopus's that could fit in my tank possibly? can you please list their life expectancy too? thank you! i've been in the reef hobby for many years so water perimeters are not a issue for me however if there's anything else you guys can tell me that would be amazing! i also already know they're escape artists so i'll definitely be sealing my tank shut.