I'm looking to end up with a 75-gallon tank for an octopus sometime in the future, and I'm wondering if it makes more sense to buy or build. The size I want (36" Long x 20" Deep x 24" Tall) isn't common from what I've seen. I have worked it out such that I could build it from 1 sheet of 1/2" acrylic, meaning it would cost something close to $200. I've looked on glasscages.com and other such places, and while they have good prices, I'm afraid the shipping to CO from most major aquarium dealers would put the price way beyond my reach. Does anyone know a good place to buy ready-made aquariums in CO, or am I just better off making my own? Thanks very much.