Hey everyone... It's been a long while, and some of you may remember I've always wanted to have a pet octopus, but I never got around to it simply because I didn't trust myself in terms of responsibility. However, now I think I'm ready. I managed to snag a 50 gallon tank for 50 bucks at a local pet store, so I just want to know again, what will I need material-wise, and how to prepare to plop in a new friend? Thank you! Also, I was thinking of getting a Bimac, my local store only sells blue rings, and they're rather expensive (around 90 bucks each) Where could I get a bimac?