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CarbonDoser Electronic CO2 Regulator

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.

-fully automatic
-fully electronic
-perfectly accurate (from 4 bubbles per second (240 per minute) down to 1 bubble per 10 seconds. (Count can NEVER vary more than 1/1000th of a second!)
-fully adjustable: you can adjust the "seconds per bubble" & size of the bubble (very tiny bubbles all the way up to very large bubbles)
-NO bubble counter (you count the LED light flashes instead of bubbles through a bubble counter)
-NO solenoid (that overheats and eventually fails)
-No needle valve (the 'timing of the "bubbles' is fully electronic) -Low voltage (12 volts & only draws .5 amps)
-3 year bumper to bumper warranty. (non transferrable/original purchaser)(after warranty expires, we will repair unit for $50 or less. Meaning, this is the "last" regulator you will ever have to buy.
-Yes, it can be controlled with all pH controllers (just like others with a solenoid...just plug it in to your pH controller)(also Neptune compatible)
-Now available: "Just the Box"... Many customers currently have a very expensive regulator body, with poor quality needle valves/bubble counters/solenoids, so, we are now offering the "electronic control box" separately to use with your existing reg body. They utilize a 1/4in or 1/8in NPT thread size. (contact us if you wish to send your reg body and have us assemble it and test it for you, this service is currently FREE!)

1. Attach and tighten to compressed tank.

2. Conduct a simple 'bleed down' test:

3. Please be sure the "perma-seal" (threaded brass piece with rubber O-ring) is installed either into the regulator or the cylinder. This is what creates the seal between the regulator and cylinder. You do not need Teflon tape on the threads here!

a. Ensure regulator black knob is closed (counter clockwise all the way out) NOTE: If the co2 cylinder is opened while the knob is engaged, the high pressure could damage the low pressure gauge, or affect its accuracy and void the warranty.

b. Open main valve on tank (very, very slowly)

c. Note pressure on gauge

d. Close valve

e. Wait 5 minutes

f. If successful, (no seepage) the previously noted pressure should NOT have bleed down reduced at all.

g. If the pressure dropped: remove regulator from tank AND REPEAT process.

4. Start out slowly when adjusting co2 (too much Co2 will kill your fish)

5. To really get used to the Regulator, we suggest you take a glass of water, and simply put the Co2 tubing in the water to get a feel for the bubble count, and the size of the bubbles. This small test will really give you an idea of the broad adjustability of the unit.

6. To adjust the bubble count, turn the dial from 0-10. It is adjustable from 4.66 bubbles per second all the way down to 1 bubble per 10 seconds.

7. To adjust the size of the bubble simply adjust the knob. Clockwise raises the pressure and therefore increases the size of the bubbles and counter-clockwise lowers the pressure and therefore decreases the size of the bubbles.

8. As previously stated, we strongly urge you to take your time and experiment with the unit before actually applying it your Co2 reactor, or calcium reactor. Quite quickly, you will begin to see its incredible range of adjustability and accuracy.


  • Right gauge: High pressure gauge, shows the amount of pressure in the Co2 cylinder. (note: pressure is NOT an indication of how your cylinder is actually a liquid while under pressure. It will hold its pressure quite stable until it begins to run out.

  • Left gauge: Low pressure gauge, shows the pressure at which you are actually dispensing the Co2. (in this instance, remember, it actually allows you to control the size of your bubbles

  • Pressure safety relief valve: Located on the far left side of the Regulator. This is simply a safety feature that will release the pressure if you set it higher than 40 lbs. (you should never touch it)

  • Little Black Box: This is the part that distinguishes our regulator from every other reg in the world. Rather than an electronic solenoid, needle valve, and bubble counter, you simple control your bubble count with the dial. As stated above, you can adjust from 4.66 bubbles per second all the way down to 1 bubble per 10 seconds.

  • Black knob Adjusts the pressure which adjusts the size of the bubbles.pressure. It will hold its' is NOT an indication of how " 

This unit carries a full manufactures warranty for a period of three years from the date of purchase. As stated. Opening the cylinder valve while knob is open will destroy the gauge and void the warranty. Also, certain exclusions exist, such as corrosion, and damages do to unnecessary abuse and poor maintenance. Any tampering or attempted dissassembly will also void warranty. Warranty is only valid to the original purchaser and is not transferable. IMPORTANT: if water backs up in to the unit, it will void the warranty. Even though good quality check valves usually prevent backflow, don't trust them 100%. We recommend making a 10" loop in your co2 tubing and hanging it above the regulator. If water backs up, you will see it in the "loop". Checkvalve required. Replace checkvalve every 6 months. 

Warrantied items either repaired or replaced at our discretion.

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Steve W.
Canada Canada
I recommend this product
Carbon doser Regulator

Overall I would say,it was one of the smartest decision I made,when it came to my tank. Money well spent,now I see what the hype about this piece of ingenious breakthrough in C02 regulator was all about. The use Of the phrase set it and forget it,has always alluded me,in this hobby until now. Fantastic piece of equipment. Thank you guys.

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