acrylic scratch removal

I've definitely learned my lesson about using magnetic alge scrapers with gravel. on Saturday I was using my mag float Alge scraper, I got close to the gravel and got a piece of gravel in the scraper and didnt notice until it was to late I put a huge scratch in the side of the tank. I'm...

Which is better (time and effort) and a cheaper way to remove scratches in an acrylic tank, using the Novus system or wet sanding? It's a small 40 gallon tank. Thank you. Edit: Upon further research, I guess it would be better if you do wet sanding first then try the Novus system. Noah