I have a 55 gallon square tank with holes already drilled the tank is definitely watertight I personally did not like the scratches on the front glass that the previous owner had done he was not very good at cleaning my wife thinks I’m crazy because she hardly sees them but I know they’re there anyway there is also a nice stand that goes with it could probably use a good sanding and staining but it is very very sturdy I think you could park a car on it basically it is my old one that you’ve all seen plenty of pictures of If you are interested hit me up you know the drill no sump sorry I gave some to somebody already that needed it