• Welcome to TONMO, a community of cephalopod experts, hobbyists and enthusiasts. Established in 2000, we are the founders of TONMOCON, and birthplace of World Octopus Day and Cephalopod Awareness Days. ...You can register here, and Introduce Yourself. To rid yourself of ads and enjoy other perks, become a Supporter for just $25/year. (Now accepting bitcoin & other crypto!) ...Follow us on Twitter and YouTube for more cephy goodness.
  • Looking to buy a cephalopod? Check out Tomh's Cephs Forum, and this post in particular shares important info about our policies as it relates to responsible ceph-keeping.

Help the Newb


Oct 14, 2008
hey everybody. I've been wanting to get my own aquarium and get an octopus for it. I've done some research, but I'd definitely like some advice from some people who know what they are doin' haha. What size tank should i invest in? I was looking at getting a reef octopus. Would that be a good choice for someone who is just starting out, or should I go with another octopus? I'm still pretty much in the dark on all this stuff and could really use some advice on setting all this stuff up. Thanks


TONMO Supporter
Staff member
Mar 8, 2004
:welcome: to TONMO!

The best place to start is to read the ceph care articles under the big ARTICLES button at the top of the page, they'll give you a good overview. We recommend a large tank, 55-75gal, for the best pet octos. Most of the articles are from the days when bimacs were common, but almost all applies to octos in general, except that the reef octo (briareus), hummelincki, and aculeatus never need a chiller, while it may be helpful for bimacs.

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