Ista CO2 Aluminum Cylinder Set - Pressure ReducedDo you want to have the most robust, lush planted aquarium possible? By implementing a CO2 system into your freshwater aquarium setup, you will provide the missing link that has been holding your plants back from luscious green growth! The Ista CO2 Aluminum Cylinder Set (Pressure Reduced) is the perfect solution for growing healthy, strong plants, and contains all of the necessary components to take your planted aquarium to the next level, with little