So I have a 28g nano that has a ton of scratches in it. I been looking online and got all the stuff they say to use ie: 600, 800, 1000, 2000, 3000 grit sand paper, Novasec 3 etc... here is my issue it doesn't seem like the sandpaper is even doing anything all the tuts say 5-20min for a section these scratches aren't all that deep just enough to feel with a nail. Not even getting a hazing on the tank anyone ever try doing this with one of these JBJ? Advice would be great.