Aluminum CO2 Tank Built for Sealed Grow Rooms
The 20 lb aluminum CO2 tank holds 20 pounds of liquid CO2 in a 6061-T6 aluminum alloy cylinder. It carries an 1,800 psi service-pressure rating under the DOT-3AL specification. At roughly half the weight of a comparable steel bottle, it stays rust-free in humid rooms. The CGA-320 outlet threads onto any standard CO2 regulator or solenoid-controlled injection setup.
Sizing a CO2 Tank for Grow Rooms
In a sealed 5x5, a full fill typically holds 1,000-1,500 ppm for about a month before a refill. Actual runtime depends on room volume and how often the door opens. This refillable aluminum CO2 cylinder ships empty by law, so plan on a first fill at a welding or beverage-gas supplier. Pair it with a CO2 regulator and a ppm controller to dose only during lights-on. It feeds the same line for both continuous-flow and solenoid-burst setups.
Key Features
- 20 lb CO2 capacity: Holds enough liquid CO2 to keep a small sealed room at target ppm for roughly a month between fills.
- 6061-T6 aluminum build: Runs about half the weight of a steel bottle and won't rust in a humid grow space.
- CGA-320 valve: Threads onto any standard CO2 regulator or solenoid, so it drops into most existing injection setups.
- DOT-3AL, 1,800 psi rating: Certified for CO2 service and refillable at welding or beverage-gas suppliers.
- Protective collar: Molded collar guards the valve while moving the tank between fills.
Technical Specifications
| Specification | Value |
|---|---|
| CO2 Capacity | 20 lb |
| Cylinder Material | 6061-T6 aluminum alloy |
| Valve Outlet | CGA-320 |
| DOT Specification | DOT-3AL (3AL1800) |
| Service Pressure | 1,800 psi |
| Diameter | 8 in |
| Fill State | Ships empty (not filled) |
| Included | Protective collar |