Ok, I know a LOT about octopus, but im still studying on how to KEEP pet octopus. For 1 I want to know were to get salt water. Like were can I buy 35 gallons of salt water for my normal sized octopus? It said somewere that I have to buy SALT alone, AND water? so what do I do? Buy the sea salt right? But what kind of water should I buy? Fresh water? And then mix the salt with the fresh water? I also need a full list of equipment I need for my octopus. Im thinking of buying an octopus from www.fishsupply.com it's a medium octopus fairly small and is about 2 months old. I also wanna know if a 35 gallon take costs a LOT. Does it? Thank you.