I learned this the hard way with my 1974 MG B. I test drove it and looked it over from all angles and there didn’t seem to be any problematic rust. But lo and behold, digging into the floors a little bit they are pretty much rotten and now I’m doing a big restoration project. The lesson I learned the hard way, rust is 10x worse on the inside of the metal than it looks on the outside.

I do agree that the before was great, however it was very high maintenance with the dense planting. The Amazon Sword and a few of the other fast growing plants eventually overgrew the whole tank and it became too much work for me to keep up with. So I decided to cut back significantly and go for a simpler and easier to maintain aquascape.