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Octo-proofing a rimliss aquarium

skywindsurfer

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#1
I have a serious question, but first I'd like to address the elephant in the room.

1.) FACT! Octopus are extremely intelligent and amazing escape artists, and near-complete sealing of the system is the ideal way to octo-proof an aquarium.

That being said, I'm looking for advice on how to octo-proof my 12 gallon Nuvo cylinder without putting a makeshift lid on it. I have seen pictures of some public aquariums that use abrasive materials around the edge to discourage animals from climbing out. My thoughts were to find a material that had relatively short "fibers/extensions" with one side extremely abrasive and the other "smooth as silk," so as not to scratch the acrylic. And because I do not want these modifications to be permanent, I was thinking of getting some plastic clips, on which I would glue said abrasive material, and clip a strip of this material all the way around the top of the cylinder, just above the water level. I would then block the overflow entrance into the back chamber with a coarse, and slightly abrasive, sponge. Please keep in mind that I intend on keeping O. Mercatoris (if that makes any difference in material selection or set-up).

So,..does anyone have any input on what material(s) would be best for this project and where I can get them, and are there (if any) changes/alterations to this idea that you would advise?
 

DWhatley

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#2
I have never tried the "astro turf" method but @Jean has warned that the prohibitor must be wider than the octopus arm is long, hence blacking out roughly half your tank.
 

skywindsurfer

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#5
Do you know the maximum arm length (fully extended/stretched) of and adult O. Mercatoris? Taking that measurement, I could slightly increase this length, divided this increased length in half. Using this new measurement, I can develop an angled (~30-40* from the vertical axis inward) barrier in which I adhere the abrasive material to prevent the animal from reaching past the material, without covering up my entire viewing panel with said material. What say you D?
 

DWhatley

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#6
I would not attempt an open top. I have used a top with a hole in the center and 3" of full coverage around the sides for a merc but would not try that with anything else. My guess would be 5" for arm length but remember that they can alter the length.
 

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