A new tank is cycling right now for a new ray that I am planning on buying. I have only kept one other ray so as a beginner do you think I should keep the tank bare bottom? I like the look of it a lot better and don't want to have to deal with sand. How often do you guys vacuum the bottom of the tank? Just with the weekly water change? Is there anything I should be aware of? Thanks everyone! I wouldn't want anything to go wrong with this tank.