So... I'm looking for a bigger tank for an angelfish... Now I have a computer desk that can be used as fish tank stand. The problem is, it has plywood so I'm thinking of replacing it with MDF (medium density fiberboard) The computer desk has metal legs connected by vertical metal pipes. Now what are the dimensions of 20g, 20g high, 20g long and 25g, 25g high, 25g long if there is such a thing as a 25g, as well as 30g, 30g high, 30g long. I looked online but I've been getting a lot of mixed dimensions so IDK which is certain. Thanks for the help!