My 220 is scratched pretty bad, just never really bothered me until now. Looking for suggestions on how to remove the scratches.
1. Get a baseball bat
2. Destroy tank with scratches.
3. Buy new tank
4. Profit

Technically you can't really remove scratches from glass, but you can polish the edges of them smooth so they aren't noticeable. Cerium Oxide otherwise known as jewelers paste is one product that could help to greatly reduce the appearance of scratches. When I was cleaning my tank up I couldn't find any cerium oxide, but someone recommended turtle was buffing compound to me which when used with a dual action buffer made a huge difference in what I could see. Both the compound and buffer can be found in automotive sections of your favorite stores.