Most never ink in captivity. Not quite sure what you mean by living in the lightning capital of America - do you keep any fish, then? Do you drink water or shower or wash clothes?Something I forgot to mention and haven't seen in the replies. If you spook the octopus, it will shoot ink into the tank. This necessitates an emergency large water change to keep the octopus from killing itself. For me, living in the lightning capital of America, I think this disqualifies me. One of the reasons I like living here is the thunderstorms. I imagine they get comfortable after a while, but still...