Ideal for Nano Tanks. These sets can be easily adapted to any kind of tank even plug and play tanks. Ideal for beginners and low light tanks with low demands for CO2. The CO2 could last for months if setup correctly. For low light tanks the rate of 1 bubble every 5 seconds can guarantee the usage for months. Place the CO2 diffuser to the very bottom of the tank to achieve the best CO2 diffusing effect. Supporting rack included which provides elegance and easy installation. Top quality CO2 pressure regulator provides easy precise constant and reliable CO2 supply. Quality acrylic diffuser provides the best diffusing effect.