So this Christmas my sister gave me a saltwater tank set and told me that a pygmy octopus with my name on it would be ready for pick up in a week or so. After the general freaking out with extreme excitement and happiness had passed, I began to ponder if this was such a good idea. While I have been wanting an octopus for quite some time and know a little more about them than your average person on the street, keeping one that is already on its way and will be here shortly is kind of a different story. I know what to feed it, but not how much and how often, etc. So I am now in possession of a 16 gallon tank with salt water and a power filter designed for a 20 gallon, a heater, water conditioning, all that basic stuff. But I'm not sure if that is a big enough tank? Also I know that I will have to get live rock and live sand and an air pump, but what else? As excited as I am, I'm a little worried I'm just not properly equipped to keep my awesome new pet happy, so any tips, advice and instruction is greatly appreciated! I especially want to know simple basic stuff like how often and how much to feed a pygmy, a list of essential equipment, how to introduce the pus to the new domain, etc. Thank you! Also one thing I am worried about is the filter... I am afraid it might now be strong enough, but more than that I am afraid an octopus that size might be able to slip through the tiny slits that suck in water. There is no fan thing in the filter that could hurt it but I certainly don't want it stuck in the dark place where all the general gross stuff collects (though of course I would clean and change it often) is there a way to octopus proof it?