I would not place fish in the tank until the tank has (cycled). If you plan on cycling with a few small active fish such as blood fin tetras,sivertipped tetras, Pristella tetras ,or small danios, I would let the tank run with filter and heater for a week before adding the small fish to ensure everything is operating correctly.
For the scuff mark, I might paint that side of the tank (outside) ,with a sand colored paint and or place a plant or two there to help hide the spot. Tank looks good to me.
Last edited by 1077; 03-08-2010 at 02:02 AM..