i just subscribed to this site after wanderin upon it in my aquarium research. i am very interested in getting an octopus, but im not sure where to begin. i have a 55 gal tank with only one cichlid left in it, and a 10 gal reef tank. once my cichlid dies, im hoping to set up the tank for an octo. how much MONEY would you say it costs to make the transition from frewshwater to saltwater? like, including the price of filters, protein skimmers, and the works. and for a begginer, what kinda octopus would be the easiest to care for?