I’ve been in search of a larger tank(200-300 gallons), shopping new and used acrylic and glass tanks and came across a large tank that supposedly is 10 years old that has never been used, owner states he had big plans for it years ago but did not end up setting tank up, silicone looks factory and new, I’m not seeing any scratches or evidence that the tank has ever been used, what are your thoughts on buying a old never used old tank?