Great looking tank. What I would suggest is making your rock piles somewhat higher resulting in more hiding places. You can look at placing the bottom rocks directly onto the tank bottom. Place them on a thin piece of polystyrene so they don't damage the glass. I vacuum under my rocks every 3-4 months. Better than doing it monthly. I found that by leaving the tank as is, besides weekly water change of around 15-20%, it became far more stable.
