I may have a chance to get a used tank approx. 200Gal. My mother saw it and it is about 6 ft. by 3 ft. by 18 in. I have had fish several months now, and want a lager tank. But was thinking more like 75 gal. I love the idea of a large tank, but need to have more information. How does maintenance compare to smaller tanks? Also what kind of filtration, heaters, etc. would I need for it. I am not sure I want to go that large, but the price is so good I do not think I can pass it up. It is a tank that came from a restaurant that closed. It is clean. I am not sure if it has any filtration or anything else with it currently. But at less than 150.00 I think I may go that way. My big concern is upkeep. I appreciate any feedback. Thank you. Oh, by the way, my largest tank is currently a 30 gal. Sherry