• TONMOCON VII Announced | MBL at Woods Hole | Apr 6-8, 2018
  • Thanks for visiting! TONMO is the world's greatest online cephalopod enthusiast community, with interactive content going back to May of 2000, and a biennial conference. If you'd like to join in on the fun, become a TONMO member -- it's easy and free. You can follow us on Facebook and Twitter for more cephy goodness.

Help with tank for a beginner


Larval Mass
Jul 27, 2005
As you all can see, I am new to these forums. I have been interested in getting an octopus for several months now. Currently i have a 215 gallon reef setup, that I enjoy tremendously. I know that i will have to get a new tank for my octopus, for obvious reasons, however; I have not been able to find information on the right tank. I assume I will need something around 55 gallons, but my main concerns are 1) How to filter the water properly without the octopus escaping and 2) Where and how to put the light as to not be bad for the octopus.
If you have any suggestions you can offer any help would be greatly appreciated. Also, if able to include photos of your personal setup, those would be great to give me something to visualize.

PS. If this is in the wrong forum im sorry, this appears to be the correct place, but if it is wrong admins feel free to move it.

Thanks in advance,


Staff member
Nov 20, 2002
Dallas Texas
Hi mp3 and welcome to TONMO.com! :welcome:

You have a good start if you already have a big reef aquarium. You're right, a 55 gallon will do for an octopus (such as the tank bred bimac).

The easiest way to handle filtration is to use a sump. Have a look at the thread at the top of this forum (What do you have....) where people describe their setups.

You need only as fluorescent strip light for an octopus, not those bright lights you use for reef tanks, so it can be right above your tank cover.

Hope all that helps!


Members online

No members online now.