My dreaded fear may have come true... but that was the risk I took.. I went to permanently move the octopus to my 29 gal biocube and it was no where to be found.. I fear it has escaped into my main tank, but I have no way of knowing for sure. For the past couple of nights I have been keeping an eye out and getting up in the wee hours of the morning to check the tank for octo like movement, but I have not seen any. I do have a large porcelain crab that I have been keeping an eye on because from what I have heard.. the Octopus will go after crabs and such before fish.. I got a scare last night as I checked the tank. I found the skeleton of the crab, but later found him.. He must have just molted.. I will continue to keep an eye out.. I also think I will go buy a few crabs for the tank, as I'd rather lose them than fish.. If anyone has any ideas, please share.