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

This is a great regulator, and very well priced compared to its competition. It is easy to set up and adjust. F zone as a brand are underrated in the aquarium market. Highly recommended.

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!

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

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.

Love the FZone products. This regulator has a high quality build and great finish in black/chrome. As always, excellent customer service from these guys. 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!

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

Facil y rapido de instalar lo puse junto con un atomozador de chihiros y funciona perfectamente la solenoide corta el paso del gaa en un par de minutos,solo que la presion no es regulable porque es de una etapa y al menos a mi con la botella llena me marca 100psi contacte con fzone y me dijeron que era normal y no era peligroso me contestaron enseguida

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

ottimo dispositivo per regolare co2 in acquario

Using it for last 3 months. This is what I wanted.

Bisher mach es was es soll 👍🏻