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Octo Den and Passages

Vonsamhain

Cuttlefish
Registered
Joined
Jul 23, 2007
Messages
26
When considering a full grown Bimac... what would be an "ideal" den size in your experience? As well as a comfortable diameter passageway between caves in the network? Like a 5"X5" den sizes and a 3 diameter passageways in the cave side of the tank or is that still way to small? I know they could definately fit through just about anything...but Im talking about what they would like for an ideal.
 

aximbigfan

GPO
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Joined
Jan 17, 2006
Messages
167
its best just to leave some materials in the tank and let the octo make his own den IIRC. octos really like to build their own den, and might not feel comfertable in a den that wasnt made by them.

chris
 

Nancy

Titanites
Staff member
Moderator
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Nov 20, 2002
Messages
5,771
You could also build dens of varous sizes to accomodate your octopuses' growth, plus leave some building materials in the tank.

Nancy
 

Vonsamhain

Cuttlefish
Registered
Joined
Jul 23, 2007
Messages
26
Thanks for the feedback. I will most likely build several cave sizes at both ends. I would like to create a natural environment for the octo with only native elements to the tank. Im thinking about a bimac or a red, which will both be cold water (and local) and will have tank insulation/chilller (required in the hot livermore area where i live). I got a free 55 gallon acrylic tank that Im drilling for an overflow. I wanted to go bigger (90-125 gallon) but I can argue with FREE.

What size is then den for your Bimacs and Reds at adult size (that they build)? Do the tend to like them at the bottom or top of the tank? Do they rather have sand or bare rock for there dens? I plan on letting the octo do some of his own home modeling, but the basic cave network will need to be laid out first, then the octo can chose from one of the half dozen or so den-like caves.

I have accumulated a large amount of random parts/filters/heaters and plumbing that I will most likely never use and the wife tells me to throw out. I may start a thread one day giving them away for FREE to new/young hobbiests, and just charge for shipping.
 
Joined
Dec 16, 2005
Messages
672
By "red" do you mean O. Vulgaris? If you do your original tank plans would be a good suit for him. With the 55 I would stick with a Bimac. Fine sand is a good substrate for an octopus. You can throw in rocks of various shapes and sizes and some shells from clams, hermits, or snails in the tank along with other things so your octo can create it's den.
 

monty

TONMO Supporter
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Mar 8, 2004
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shipposhack;98688 said:
By "red" do you mean O. Vulgaris? If you do your original tank plans would be a good suit for him. With the 55 I would stick with a Bimac. Fine sand is a good substrate for an octopus. You can throw in rocks of various shapes and sizes and some shells from clams, hermits, or snails in the tank along with other things so your octo can create it's den.
Since he said California, I imagine he means O. rubescens... although GPOs are reddish, too...
 

Vonsamhain

Cuttlefish
Registered
Joined
Jul 23, 2007
Messages
26
Monty is right... although trying to shoehorn a GPO in there would be funny, AND sad at the same time. I meant either a Bimac or O.rubescens. Nothing bigger than either of those. I may just stick to natural rock as you guys are suggesting.

Do they need rather smooth rock for their delicate skin?...or are the porous rocks OK to use? Im not talking lava rock or anything. What kind of rock do you suggest?
 

Vonsamhain

Cuttlefish
Registered
Joined
Jul 23, 2007
Messages
26
Well, I ran into some roadblocks, from some finacial reasons. But I finally finshed all my major purchases for this project. Here is what I finished with:

-55 gallon Tru-vu (free) Insulated for effeciency, custom overflow in the corner
-15 gallon sump made out of a chest cooler (inlcudes both a bioblock section w/ a micro screen, and a sand bed/live rock section
-Berlin turbo Protein skimmer
-1/10 HP Arctica chiller (B-Day present from the wife)
-Live Sand (from the beach in Northern Cal, local)
-Live Rock (local also)
-3 stage DI water kit with shut off floater
-Lots of high grade plumbing supplies


Just need to finish off my plumbing, and get it started on cycling a bit, Im going to cycle in the high 70's, then drop the temp slowly to about 60-65 before intro of the octo:

Either I'll travel South for a bimac, or just go local for a red (rubescens). I hear they are rather abundant if you know where to look. I like the challenge/personality problems (hehe) of the red. I always liked animals with a bit of a nasty disposition.
 

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