400 gallon project

[untamed]

Originally Posted by Delphinus

For the deep scratches that for which repeated magfloat cleaning won't remove, and thus you would have to use those tools you speak of - would you have to drain the tank to do so, or can you work on the scratches below the waterline?

No need to drain the tank. It is just a lot of different grades of very fine sandpaper. While you can attach the sandpapers to a magfloat, it is more effective to just reach in there and polish by hand. It is just really tiring, so it has to be a really bad scratch before I'm willing to do it.