Joe-Ceph,
Ah, thanks for the link I didn't see that. I think I'll probably opt for a larger tank, at least 100 - 150 with what I've been reading around the forums. It seems like the larger the tank the better for the octopus.
Jean, The tank I would have gotten if not for the size thread is far to small, only 50 gallons. I will definitely watch out for copper if I find a used tank to buy, it would be a sad thing to have my Octo die because I made a stupid mistake.
DWhatley, Thanks for the book link I'll probably buy it after I get the tank. The expense is already seeming a little daunting, and will probably be put on hold until I can find a job after I graduate. I'll slowly start building up my saltwater experience. I don't want anything to prevent me from being able to adequately keep my pet happy and healthy. I have been looking around for buyers and can't seem to find any very close, but I have plenty of time before I buy one.
Thank ya'll so much for the help, I really appreciate you being so thorough! I definitely will take all of this advice into consideration.