UNS CO2 Cylinder Pro

Usually ships in 1-2 business days from our fulfillment center
IMPORTANT: Due to shipping hazards and regulations, cylinders are NOT filled prior to shipment. Filling should be performed at your local, certified source once received.

Please handle with care. Improper use may result in damaged product or injury. If you have any questions, please send our team an email at hello@glassaqua.com

Essential basic for a pressurized planted aquarium CO2 system.
Designed to be used with Dual Stage UNS Mini CO2 Regulator. 
Click here to shop all CO2 essentials!

The UNS CO2 Pro Cylinder is offered in 3 different sizes for convenience. 5LB, 10LB 20LB UNS Pro Cylinders can be refilled at any local gas or brewery supply retailer. Before use, ensure that the Pro Cylinder is filled by a professional and the valve is closed,. Next, install our recommended UNS CO2 Pro Regulator tightly to the cylinder and ensure that all regulator valves are closed including the UNS Manifold block(s). Open the Cylinder Pro valve all the way. Then, set the UNS CO2 Pro Regulator main valve to ~35psi and adjust the needle valve on the UNS Manifold Block according to your needs. Once set, there is no need to adjust the Cylinder Pro valve until CO2 has been depleted and the CO2 regulator reads 0psi.

CO2 reserves and depletion rate may vary depending on various external factors such as usage, aquarium plant requirements, and tank size. 

Why CO2 injection is important in a planted tank: 3 main factors contribute to optimal growth of aquatic plants. These factors include, nutrients, light and carbon dioxide (CO2). If any of these are unbalanced, the results are algae growth or the withering of plants. The introduction of CO2 in a planted aquarium allows plants to thrive and grow more efficiently, while also giving them the ability to outcompete algae for nutrients. 

No matter what type of planted aquarium setup you have, we recommend CO2 injection for better aquarium plant growth.

Features and Specifications for UNS CO2 Cylinder Pro

Volume: 2.5LB / 1.68L
Working Pressure: 139BAR / 2015PSI
Test Pressure: 232BAR / 3364PSI
Height: 11.02" / 280MM [without valve]
Weight: 3.86LB / 1.75KG
Material: DOT3AL Certified

Volume: 5LB / 3.35L
Working Pressure: 124BAR / 1800PSI
Test Pressure: 207BAR / 3000PSI
Height: 14.53" / 369MM [without valve]
Weight: 6.61LB / 3KG
Material: DOT3AL Certified


Volume: 10LB / 6.7L
Working Pressure: 124BAR / 1800PSI
Test Pressure: 207BAR / 3000PSI
Height: 16.93" / 430MM [without valve]
Weight: 13.22LB / 6KG
Material: DOT3AL Certified

Volume: 20LB / 13.4L
Working Pressure: 124BAR / 1800PSI
Test Pressure: 207BAR / 3000PSI
Height: 23.62" / 600MM [without valve]
Weight: 23.80LB / 10.8KG
Material: DOT3AL Certified

Shipping, Returns and Refunds
Live plants are shipped Monday - Friday for all west coast orders. For all remaining states, live plants will only be shipped Monday through Wednesday and Friday to ensure they arrive at your doorstep 100% healthy.

Rimless aquariums will be shipped throughout the week via UPS or Fedex Ground. For more information, please visit our FAQ page.

Hard goods can be returned up to 14 days after receipt of purchase. Buyer is responsible for return shipping.

Due to its nature, we are unable to accept returns for live plants. In the unlikely event you are unsatisfied in any way, please contact us ASAP. We provide 100% DOA (Dead On Arrival) protection.

To be eligible for a refund/store credit, please contact us within 12 hours of receiving it and provide a photo of the item in its original packaging.

No worries, we’ll take care of everything as long as it fits the guidelines above.

Most answers to general questions can be found on our FAQ page.
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