







💨 Master your CO2 flow with precision and power—no compromises!
The FZONE Aquarium CO2 Regulator is engineered specifically for paintball CO2 tanks, featuring a 12V DC solenoid valve for stable, low-noise operation and a high-precision needle valve for fine-tuned bubble control. Its integrated aluminum alloy bubble counter with check valve allows real-time CO2 flow monitoring while preventing water backflow. Designed for easy installation with no adapters or assembly required, this regulator combines durability and efficiency to elevate your aquarium CO2 setup.











| Customer Reviews | 4.2 out of 5 stars 298 Reviews |
A**R
Easy to use
Great price for the product. Easy to set up and works well.
M**D
Ideal for paintball setups
The regulator feels very solid in terms of build quality. There were no instructions included. However installation is as simple as screwing on the regulator to paint ball tank , filling the bubble counter with water and attaching it to the regulator / CO2 diffuser. Didn't have to use teflon tape at joints since it uses the paint ball tank' O ring for sealing and there is another O ring for bubble counter. Tested for leaks at joint using soapy water + a brush and there were none. The needle valve is easy to adjust and maintains the bubble count once adjusted.Attached to a timer, the solenoid works like its supposed to. Hopefully it lasts long. The solenoid seems to be integrated and not sure if it can be swapped out in case of a failure.
D**O
Quality Product by FZONE!!!
It arrived quickly and was packaged nicely so it arrived in mint condition. I've had low tech plants for a few months now, and recently got into co2 setups and this regular comes with everything you need. I attached it to a small paintball tank I had connected all the hoses and it was ready to go. No leaks, its not made of plastic which increases its value, it fit snug, did I say no leaks. If I had known setup would be this easy I would've added co2 to my tank sooner. Its precise and the readings are consistent. The nozzle is high quality and was very easy to make adjustments. I will purchase another one once I convert my next tank to co2.
B**Y
FZONE for the win
Yet again FZONE doing their thing with great fitting products. When buying these products you don’t have to hide them. They look and function great.
K**G
LEAK
Even with the power FULLY OFF, the bubble counter was still showing leak and bubbling. I had to take off the regulator off the CO2 tank (20oz Maddog brand on Amazon). If I didn't have catch this and left CO2 flowing into my tank all night, would not have been pretty. Regardless the product it self looks and feels very sturdy, strong tight hold, but can't help but have a leak. Leaving 1 star review at the moment, have sent service an email, and await to hear anything.
S**R
Nice and cheap, works well. Only issue being it giving too many bubbles with small turns
Really nice and cheap for the price. I got a tippman paintball CO2 tank, which was about 40$, then refills coste about 5$ from Scheels. So pretty cheap in the long run. My only problem is that its really really difficult to fine tune the smaller CO2, the knob can turn a lot, but any greater than 1/4th the turn would be too much CO2 for most tanks. It would be better to have it turn more for less CO2, making fine tuning easier and also so a small turn doesn't end up giving too much CO2.Im using it on a 20 gallon long with aim for 2bps
J**K
Super flimsy connectors
I have had these products for few years now and whelp, it finally happened. After babying these incredibly OVERLY delicate regulators, the power connector finally snapped. Twisted the regulator top to seap out canisyers and snap, $70 down the drain with little to no pressure. I will be finding a new brand. I detest how they are powered on. 2 thin pieces of tin witn a plastic safety box? Cmon, horrid design. Good luck contacting customer service.
A**R
Loving this regulator! Little bit of a learning curve, but great customer service!
TL/DR for newbies like myself: Let me just tell you not to freak out if you screw the regulator onto your full Co2 tank and it doesn't work. Plug the solenoid in first and THEN try to use the needle valve. (thank you customer service) :) Also get some backup paintball O-rings AND gel silicone lubricant for the O-ring. If that thing breaks, your tank will leak until you unscrew the regulator. Also speaking from personal experience. Now onto my paintball/Co2 noob experience: This was my first time having REAL Co2 for my fishtank. Before I was using the Fluval setup that uses the 16g throw away cartridges. So even though I did reading online and had friends helping me, it was still just reading...no hands on experience. I ran across this regulator and wanted it because it didn't need any adapters and I could just get a paintball tank. When I came home with my newly filled 20oz Tippmann paintball tank and screwed on the regulator, it chewed right through the O-ring that came with the tank...and dumped half of the Co2. That was a "fun" evacuation from the room for 10 minutes. So I got some O-rings from the local army surplus/paintball shop, regulator chewed right through those as well. THEN I ended up ordering some red polyurethane paintball O-rings off here...and figured out that you need a silicone lubricant for them...woops! Because I'm new to this, when I screwed on the regulator and turned up the needle valve, nothing was happening. Great...I got a broken one. So I contacted customer service and long story short, you need to plug the solenoid into the wall before it'll work...oopsie. Finally after over a week of this mess (all caused by ignorant me), I got this thing setup and working after same hour(it was more like minutes after messaging them)help from customer service. This regulator has also saved SOOO much money as I no longer have to buy 16g threaded Co2 cartridges in bulk that only last a few days each. I have the solenoid(which has been silent) plugged into a timer and it's been working great. The needle valve is very precise as well. So all in all it's been a great thing to have for my aquariums...don't be afraid to try this one, customer service will gladly help you through any trouble or silliness you might encounter.
Trustpilot
2 weeks ago
2 days ago