My Octopus tank
I had been keeping a single octopus in the refugium section for my 470 gallon tank when I decided that it was time to get a real tank for it. Since I was already having the shark & ray tank built, I asked him to duplicate the tank, but set it up for keeping an octopus, or maybe two of them, since the tank was so large. So a second setup was built with a few modifications like locking tops and a divider down the center of the tank.
Originally posted here:
My Octopus tank