I think I would buy used to maximize in size I live in eastern washington kind of by walla walla. Portland may be an option but the drive is 4 hrs. Do tanks make it? The largest tank for sale in this town is 100. I do have the skills to build my own. If I did that what do you guys think of "the cave effect"? Three walls of ply and front glass for viewing. I could build a monster right? Anyone have pics of their 2000 dollar and under indoor/outdoor pond?