Ok guys I know this has been done to death and I apologize. But I'm about to start sanding my acrylic tank. The Novus helped but didn't do a lot for a lot of the scratches and haze. Im gonna have to sand it. I know the how and the why. I cannot find information on what grit to start with. It has a lot of minor scratches and several deeper scratches. In the pics the original owner had you couldn't see them with water in it at least not far away anyway. They're better but not great. I used a drill buffer for the Novus. So my question is should I go ahead and start with 400 grit and work my way up? Or should I start with a higher grit since it's not horribly bad and I could see inside the tank with water in it even as is? I just don't want to start with an aggressive grit and pay the price because I didn't need to start with that. Thanks for your help guys and gals.