My concern here is for the animals. Yes, there are gobs of brief squid out there, but replace 'brief squid' with 'cat' or 'dog' and you'll see my point. I believe it is nigh-abusive to keep an animal in an environment where you have already been informed that it is entirely too small for these animals and given justification as to why, along with previous accounts and data from peer-reviewed articles. If we did not have this data, my response would be different and aware of the experimental nature of the squid-keeping, but there is enough precedent to suggest that sticking a pelagic animal in a sixty-gallon tank and, specifically, a squid, which is prone to jetting and experiences exposure of the gladius ('butt-burn') from slamming into walls it can't see (most squid tanks must have non-clear walls with some kind of pattern on them), goes beyond folly into abuse. Keeping one in a 120 -gallon tank is bad enough, but three? That's not even big enough for three small benthic octopuses!