I've never had a nice aquarium setup or a saltwater set up. I plan on getting two tanks...One with a nice coral reef set up and another one for an octopus. I was wondering though when it comes to the Octopus what will I need in his set up...Besides the live rock and live sand what else should I put in his tank? And roughly how much will the filter skimmer and chemicals cost for a 30 gallon tank. I'm starting off with a 30 gallon tank but soon enough I plan on upgrading. I just want a rough idea of how much the set up will cost? Also I heard you have to wait two months...What do I need in the tank to set it up for the octopus?