I have a old 37g tank that my son has decided he wants in his room. Plan is to reseal it, paint the stand to the color he wants, and then plan for stocking. While cleaning it, the top frame is pretty dirty/ possibly stained? Any good products recommended to clean? Or maybe even sand with a fine grit sand paper? The tank will not see water yet as I still have to reseal, paint stand (doing today) but also won’t start setting up till second week of March when we are back from vaca. So if a chemical is recommended that needs drying time it’ll have it.