CO2 Regulator Expansion Manifold

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  • Splits CO2 Between Multiple Aquariums
  • Individually Adjustable CO2 Output
  • Easy to Install

Easily run CO2 from one cylinder to multiple different aquariums using expansion manifold blocks. These handy manifolds screw into the existing CO2 regulator system and to each other for the ability to link as many together as desired. Simply add one block for each planted aquarium you'd like to inject CO2.

Each manifold comes with its own bubble counter and needle valve for precise dosing. 

Download Manual

Customer Reviews

Based on 29 reviews
Brian G. (Gig Harbor, WA, US)
Love the CO2 kit.

When I heard that Cory might not be selling the CO2 regulators any more I knew I had to snap up at least 1 more expansion manifold. I love the regulator and manifolds Cory made and they are quality pieces of equipment. Hope he keeps at least offering the expansion manifolds!

ZACHARY H. (Prairieville, LA, US)
Worked as expected

I wanted to add another tank to my aquarium coop regulator and this does exactly what is says!

Diana M. (Lancaster, PA, US)
More the merrier

Allows better expansion to other systems!

BN (Pittsburgh, PA, US)
Good Product from a Great Company

Product works very well. This is the first CO2 system I set up and I had a few setbacks along the way. Aquarium co-op is 3000 miles from my house but they were right there for me every step of the way. This is why I will gladly pay shipping to give them continued support.

Paul R. (Fords, NJ, US)

What can I say. This just like all there products are great. Long lasting and great prices. Thx coop