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GLA Modular Manifold Block

6 reviews Write a Review
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GLA Modular Manifold Blocks
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GLA modular manifold blocks expand CO2 distribution to more aquariums. Each block contains our custom built-in needle valve and bubble counter to direct supply of CO2 to an additional aquarium, independently.

  • for use with our new release GLA modular series of CO2 regulators purchased December 2020 or later. (contact us prior to purchase if you need help determining if this is compatible with your GLA CO2 regulator model)
  • if your existing GLA modular manifold has black color grip knob(s) on the needle valve(s), then you need to purchase this second generation edition manifold block to expand your manifold.
  • $50 / per block, select the quantity of blocks you would like to purchase to add to your existing manifold
  • Easy installation. 


Customer Reviews

6 reviews

  • 5


    Posted by POW on 18th Jan 2024

    I bought one of these to add a tank to my gla mini modular CO2 system. Installation couldn't have been easier and it works exactly as you'd expect it to.

  • 5


    Posted by Tom Kuhlman on 10th Sep 2023

    Got this as an add-on for a 3rd planted tank. As with everything with the GLA name on it, it is excellent, and works flawlessly!!!!!!

  • 5

    These are phenomenal

    Posted by Niles Gallespi on 24th Aug 2023

    GLA always had the highest quality metering valve. This valve is no exception, super precise and the curve rate is superior to the crap on everything else.

  • 5

    Love GLA manifold blocks!

    Posted by Jamie Prescott on 12th Sep 2022

    I have 14 on my co2 regulator lol! Yes, it looks totally wild and I have the cylinder anchored. With that said these needle valves are amazing. Super smooth and the bubble rate is not all crazy, its smooth and easy to dial in. Thats why I now have 14 lol.

  • 5


    Posted by Thomas Dobbins on 27th Dec 2021

    These are top of the line! Amazing company with amazing employees putting customers first!

  • 5

    Very nice manifold block.

    Posted by Jason Mannis on 21st Mar 2021

    This is my 3rd manifold block addition and it is way easier than I would ever expect. The precision of the needle valve to bubble rate ratio is super nice. Its easy to adjust a general bubble rate with ease. Installation was easy,I followed this video,

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