FZONE Aquarium Co2 Regulator Aquarium DC Solenoid Bubble Counter and Check Valve Plant Grow DIY CO2 System W21.8 Side Open Cylinder

I recently upgraded to this FZONE regulator, and I’m genuinely impressed! If you are looking for a high-quality CO2 setup but don't want to pay double for a "luxury" brand name, this is the one to get. Build Quality: Right out of the box, it feels incredibly solid. It has a heavy, professional-grade aluminum body and the gauges are clear and easy to read. It doesn’t feel like a "budget" tool at all. Accuracy & Performance: The needle valve is surprisingly precise. I was able to dial it down to exactly 1 bubble every 3 seconds with zero "drift" over time. The 12V DC solenoid is silent and stays cool to the touch, which is a huge plus. Ease of Use: It comes with everything you need—tools, extra O-rings, and a clear manual. Setup took me less than 10 minutes. Customer Support: I had a small question about the solenoid during installation, and the FZONE team got back to me almost immediately. Their support is top-tier and they clearly stand by their product. Bottom Line: Amazing value. It’s rare to find this level of accuracy and build quality at this price point. Highly recommended!

I’ve been with FZone for about a year now, and my experience has been absolutely excellent from start to finish. Their customer service has always been professional, fast, and extremely helpful. Recently, I had a small issue, and they handled everything under warranty without any hassle at all, which really shows how much they care about their customers. The quality of their work and support is top-tier. You can truly see the dedication and excellence in everything they do. I highly recommend FZone to anyone looking for reliability, quality, and outstanding after-sales support. A huge thank you to the whole team for the exceptional experience!

Started off great, but I soon noticed that the bubble rate varies massively each time it turns off then back on. This isn’t accurate or reliable enough for me, and should be like this! Returned as not fit for purpose.

Fitted straight on to a standard CO2 bottle. Does the job.

Brilliant regulator. Does what it should. No leaks that I can see. Easy to set up and get co2 running on any tank.

Bought this product just over 12 months ago and had a couple of problems with the cable and the solenoid , i replaced the cable a couple of times , decided to complain to F Zone , and got to say the acted great , gave me chance to buy the new upgraded solenoid and wiring at a very reduced price , (unfortunately the 12 moth guarantee had run out ) i have now fitted these and got to say a far more satisfactory product a lot better all round , all working great now

Had used 3 fzone regulators, from this model to the more expensive 2 valve one. The team at fzone are very kind and always ready to help. I had a missing silicone seal that they happily sent to me! Would definitely recommend this brand!

Fitted to a CO2 extinguisher.. easy to set up.. easy to control flow with directly fitted bubble counter... no issues so far after a few days of running would recommend

Bel appareil mais dommage que la notice ne soit qu'en anglais.

Buyer beware. This regulator solenoid does not shut off CO2. Soon as the product arrived, I read the instructions and installed the regulator on my 5lb CO2 tank. Right out the box, the solenoid was faulty and does not shut off the CO2. I then waited for over 4 hours to see if the bubbles in the bubble counter would stop. It did not. I then tried uninstalling the regulator and double checking my fittings. That did not solve the problem. I have to manually turn off the bubble counter for the bubbles to stop. I did a leak test. There were no leaks. Since my aquarium is still cycling, I have no livestock except for plants. Should I continue to use this regulator, IT WILL KILL MY LIVESTOCK. The instructions are very basic and provide no problem solving. There are some grammatical errors in the instructions and the instructions provide no pictures for reference. There is an Allen Key provided but no instructions on how or where to use this tool. Obviously, the durability of this product is simply not there. The accuracy, it may be accurate but it is very difficult to determine since the solenoid is faulty right out the box. The fit is perfect. Sadly, there are videos and reviews from others that have the same issue. Since some have this problem while others do not, you purchase this product on a gamble that perhaps yours may work. *****Update******* Change 1 star to 5 star. I was able to find a YouTube video by FZone Studios that shows how to take apart the solenoid to adjust the spring. Once I followed what the video instructed, the solenoid now works perfectly. What the video recommends is to take apart the solenoid, check for dirt/dust, unscrew the 2 screws to release the plate, then check the spring and stretch the spring a little bit. Reinstall the plate and solenoid and test to see if the solenoid shuts off the CO2. Once I did this, the CO2 shuts off within 5-10 minutes as the seller stated. The product works perfectly now.

working well

bin zufrieden damit für den preis,einziges manko das man den arbeitsdruck nicht verstellen kann ,da muss man halt tiefer in die tasche greifen ,vergebe trotzdem 5 sterne weil der druckminderer gut funktioniert und die qualität auch gut ist meiner meinung! noch dazu eintages lieferung! für mich in ordnung!

Es abrir el paquete, conectarlo y empezar a funcionar. No he tenido ningún problema con el kit, que funciona perfectamente, pero posiblemente lo cambie por su versión de dos etapas con dos válvulas de aguja, para que me sirva para dos acuarios. El único inconveniente que le veo a este kit es que no se puede graduar la presión de salida del CO2 y con una presión baja hay difusores que no funcionan. No es el caso de este kit. Dependiendo de lo que uses para diluir el gas en el agua necesitas más o menos presión. Con un reactor de CO2 necesitas poca presión de salida y con un difusor cerámico o de cristal una presión más alta porque el poro que tiene que atravesar es muy pequeño. Yo he utilizado este kit con un difusor y funciona perfectamente. Lo recomiendo.