What are the most common ways of adding CO2?
The two most common devices used to produce CO2 are CO2 generators and bottled CO2. Bottled CO2: Bottled CO2 is perfect for small areas up to around 12′ x 12′ x 8′. CO2 tanks are available in several different sizes, but the two most common sizes used for enriching grow rooms are 20# and 50#. When full, a 50# tank weighs a considerable amount; even a very strong person will need a dolly to transport it. CO2 tanks can be filled at most welding and dry ice companies. Keep in mind before you bring your shiny new tank to a welding company that many of them will exchange your empty tank for a used full one rather than filling it up, so make sure to ask first. Most places will charge less than $20 to fill a 20# tank and $50 for a 50#. In addition to the CO2 tank, you will also need to purchase a CO2 Enrichment System to properly dispense the CO2. The enrichment system attaches directly to the CO2 tank with either a wrench or channel locks. Most enrichment systems consist of a pressure regula
