Carbon Dioxide (CO2) is one of the easiest ways to accelerate plant growth. Plants grown with supplemental CO2 can produce up to 35% more flowers or fruit. A propane or natural gas CO2 generator is the most cost effective way to add CO2 to your environment. Blue Ox CO2 Generators were manufactured by carrying out extensive research, development and testing to produce a functional and efficient carbon dioxide generator. They are a unique development in carbon dioxide generators. You can vent the top of the generator to remove a good portion of the heat the generator creates, without losing the carbon dioxide. The top portion of the generator is an enclosed, isolated section that collects heat, allowing you to vent it from the room without removing the valuable carbon dioxide. The factory set, custom-built, solid brass impinged burners ensure a clean-burning, constant, blue flame. The gas valves incorporate the latest technology available.