taking it to the next level?
take a look at your nano tank, a long look, and notice where you have made compromises, either by the use of the given product supplies or just compromises of your own based on time or money. the devil is in the details. there are always things that you can improve such as the visible tubes and diffuser, the rock arrangement, how even is the dirt profile on the glass, the overall incline of the dirt, the cast shadow on the wall in the background, the calligraphy symbol, the MFK sticker(overpowering), the light wire, all of these things can be modified easily now that you're working with a small scale. start sweating the small stuff.