Hi there my name is Andy. I introduced myself in the new member section a week ago. I just purchased a used 150 oceanic tank on Craigslist. It is a custom made tank with one overflow at the end with four 1" and 3/4 drains/intake. In the pics you can see I am cleaning it with water/ vinegar mix to get water stains off. Kind of funny when I rinsed out the overflow box 5 little snails came out dead obviously. After I get it wiped down I am going to upright it , fill it and looks for leaks. Should be okay since it was just used not to long ago.