Luckily the tank is empty (still working on the build). I am going out this Friday to get the Novus polish kit. I'm going to start on the outside ones to see how I do. I think I will than fill the tank up and see how bad the remaining inside scratches look. I just hate to use any products like this on the inside where residual chemicals might poison my future critters.Id look at the ingredients of the polish and call the MFG. Ive only removed scratches when the tank is empty using micromesh kits. First evaluate the depth of the scratch. This will determine the grit of the sand paper to start out with, you work up progressively to finer grades of sand paper eventually finishing with rubbing compound and then polish. You normally dont want to remove more material than you have too so try not to start with a grit too coarse. I normally try to start with 6-800 which takes a little longer but eventually removes the scratch leaving a series of smaller ones at the same depth as the original scratch. Use finer grades with water until you eventually get it to a blur as if someone rubbed it with steel wool. Then switch to rubbing compound and then buff out with polish. It takes some time. I prefer to do this by hand but know others who prefer to use a buffer.
Thanks for the reply Phixer :smile: