Bulk Reef Supply

CO2 Tank - 5 lbs.

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$65.79 $93.99

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5 lb. CO2 tank for calcium reactors. This tank ships empty and will need to be filled before use. Search local "welding supply" companies in your area for locations that will fill CO2 tanks.



  • Dimensions: 17.5" x 5.25"
  • Material: Aluminum with brass valve
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Product Questions

If the fitting a cga 320 male? My regulator is only made to attach to a standard 20oz paint ball tank. I am trying to find an adapter so I can use this tank with my regulator. The regulator I have is from Green Leaf Aqariums http://greenleafaquariums.com/products/gla-mini-ss-paintball-co2-regulator.html.
Question by: Thomas Parlette on May 24, 2017, 7:32 PM
These are standard CO2 tanks with, I believe, 5/8"-18 threads. These will not fit a paintball size threading. We do sell an adapter that may work for your needs.


Have a great day!
Answer by: Zack on Jun 1, 2017, 5:15 PM