CarbonDoser® Electronic CO2 Regulator (BEST in the World)

(21 reviews) Write a Review
$389.99 - $399.99

About This Product

Buy a CarbonDoser® Electronic CO2 Regulator:  get $40 off any size CO2 cylinder !

 CarbonDoser® Electronic CO2 Regulator

  • Free upgrade to John Guest pushin fitting
  • CarbonDoser® exclusive checkvalve
  • Polyurathane tubing
This product has forever changed the introduction of CO2 into an aquarium.Used for CO2 injection for a freshwater planted aquarium, or a Calcium reactor in a saltwater application. We guarantee that nowhere on this planet can you find a BETTER or MORE PRECISE regulator! This is OUR baby, we built it, tested it, and patent it. The problem of "dumping" is completely eliminated with this regulator. Dumping is always a problem with ALL OTHER regulators which utilize a needle valve. Simply because, a needle valve relies on the pressure on both sides of it for it's accuracy. So, even though you have it set at a certain "bubble rate", once the pressure in the cylinder (or the outside atmospheric pressure) changes, so will the amount of CO2 that passes through the needle valve. This is why it is physically impossible for any and ALL other regulators that rely on a needle valve to ever be consistent. Our regulator does not have a needle valve, but instead, it has an electronic valve that opens and closes in a fraction of a second, (each "opening and closing" equates to a bubble) and, due to the fact that it is "electronic" the "bubble rate" can NEVER change. Once it is set, it can never vary more than +/- 1/1,000=of a second. The low pressure gauge goes up to 45 lbs but it can be measured up to 60 lbs. 
  • ''JUST THE BLACK BOX" Option:  This is for the user that has invested a ton of money in a high $ fancy shiny regulator, only to discover that they are never consistent. Ditch the solenoid & needle valve and use this remotely.
  • "MULTIPLE "BLACK BOX" Option: This allows for multiple "BLACK BOXES" for several aquariums but only 1 CO2 cylinder and 1 Regulator.  (please contact us for specifics/options. 

Customer Reviews

  • 5
    It really is the best

    Posted by AquaMom on Aug 11th 2010

    I tried a couple of other "best" regulators before I finally took a chance on this one. I am so glad I did. It is unbelievably reliable. I don't even worry about my co2 tank dumping when it gets low. This regulator regulates, period.

  • 5
    The CO2 Challenge

    Posted by Unknown on Jul 4th 2010

    Well, consider me part of the alumni club that started with the Milwaukee regulator and made the switch. The Milwaukee Regulator was a nightmare to calibrate and finally unloaded my whole CO2 tank into my aquarium. Fortunately, I did not have any fish in the tank yet. This unit is a plug and play unit. I plugged it in and made a few adjustments and left it alone. It turns off with my timer each night and comes on in the morning. The bubble rate is consistent and safe. Spend the money and save yourself the grief.

  • 5
    The best as Promised!

    Posted by Art on May 26th 2010

    Just want to say thanks to Mark for his great customer service. This system is as promised. I have been on the Milwaukee Regulater system for many years and I thought it was fine, just happened to add water in the counter once in awhile. This system is automated and just plug it in and set and forget. Easy way to control bubbles and it's accurate as promised as well. I Highly Recommend this item for CO2 injection.

  • 5
    10+ Product, Materials, Performance

    Posted by ReefMe on Sep 2nd 2009

    Already have a valve? Trash it or upgrade it with the part here or throw it out,what you own is incorrect, obsolete,not functioning properly,not up to the standards your reef demands to survive as a high quality environment. This unit is da'bomb,the unit that has the digital read out. Any rating here that is not 5 stars has nothing to do with this unit but some other thing that someone may have been upset about - you cannot say anything bad about this product. As other reviewers have said, 'set it and forget it' Manually setting a needle valve is impossible to do,it constantly changes with the pressure from outside the tank and inside, always. This unit compensates those constant variables and adjusts for them to give a consistent flow of CO2 to the reactor. There is no other mechanism to do this function. Every valve that exists is an inferior product for the job, cannot say enough how badly you need this. One of the best investments your ever, ever going to spend on your reef! Enjoy!

  • 5
    Regulator the Best

    Posted by Rico on May 24th 2009

    I ordered this set, and was a bit skeptical at first. But after 2 weeks, it's going great, and the plants are thriving! I'm about to order 2nd one with an added box for 2 more aquariums.!

  • 5
    very elegant regulator!

    Posted by Tim Plaza on Jan 20th 2009

    this regulator has given me some serious peace of mind with my ca reactor. very accurate bubble count/control. the digital readout is nice but not a necessity imo.

  • 5
    THE BEST !!!

    Posted by Eric Coppala on Oct 31st 2008

    I recently purchased the electronic regulator from and had to comment on this product. It is by far the best regulator I've used. My 1st 2 regulators were traditional solenoid based units and both failed in less than 4 months. When they did function, the bubble counters continually ran dry in a matter of a day or 2. Now , I can drive the dKH where I want it consistently. Also, I want to thank Mark & Randy for on the phone consultations. Lastly, the warranty service is 2nd to none as I inadvertently damaged my regulator when changing the CO2 cylinder. I contacted Mark & Randy and had a replacement at my door in 4 days. Thanks to Mark, Randy and everyone else at With regards, Eric Coppala

  • 5
    Worth every penny

    Posted by Keith Ledbetter on Oct 30th 2008

    I have gone through many regulators in my 10 years of having a calcium reactor. 3 years ago I bought the non digital version and it was good but I would still have occasional issues because of pressure differences, etc. This thing is awesome. Absolutely zero issues and the way it works is just a much better concept!

  • 5
    Greatest regulator in the world!

    Posted by Joshua Chalmers on Aug 21st 2008

    Not only has this regulator worked flawlessly, it was simple to set up and it came with the piece of mind of a 3 year warranty. The LED for a bubble counter with control coming from a highly accurate rheostat is perfection and takes the guesswork out of CO2 dosing. It's simply elegant! I will never own another regulator. I am completely smitten with this system. Excellent product guys!