Hello everyone! before i get my first octopus i have some questions! First id like to say I'v done my homework.. iv been reading up for about 5 months before even think about getting one. Now that im over the point and ready to get one and im Well aware of the Time/Money put into this.. First question! I'm thinking about buying a used tank, its 75 gal and currently has salt water fish.. its had these fish for 2 years.. So if i am to buy this tank is it ready to go for my new ceph? It already being saltwater is there copper in it? The lady didn't know and she lives an hour away :( 2nd Whats the best octopus to get for the first time? briareus and bimac's are the 2 im thinking of. Where to buy it from? everywhere i call people call them "brown octopus" or just Octopus names and don't even know what kind it is or age..