First off i am new to the site.. i dont have the tank set up right now.. im in the process of moving my room.. But i have been looking for something different to put in my 75 gallon tank when i set it up.. and i would love to put and octopus in it.. but i have a few questions Can they be fed feeder fish when they get bigger? i have read conflictiing things on this also what is a good size tank to set up as a feeder tank for clams hermit crabs and such? how would i set the tank up? i have heard they love to move things around. pics of your setups would be helpfull.