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

It works great, I had an issue with the first unit leaking co2, but the support was fantastic and they immediately replaced the unit. I haven’t had any problems with the new unit provided. I’m very impressed.

Excellent regulator, precise control.Fighter fire extinguisher no problem.You can remove a bubble counter if you don't need two outlets.

The initial unit failed to stop the flow of CO2 through the de-energised solenoid valve seat. Fzaqua were prompt to engage, but cleaning advice made not difference and unit replacement as I requested, was lost in translation, taking a week to eventually resolve a series of misunderstandings. Anyway, the replacement unit worked perfectly out of the box, and Fzaqua were prompt to initiate a refund.In summary, a good, value for money product, but I seem to have been unlucky to receive a faulty one initially, but customer services were very fair and attentive, when misunderstandings were resolved. I would recommend the Fzone dual stage regulator based on price, build quality and customer service.

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

After using this CO2 regulator for a while i am now happy to leave a review, when it first arrived it worked as should, however quickly things changed, the regulator is very sensitive and does not stick to one setting and since swapping bottles over a few times now the dials are out and it tells me a full tank has around 100 in it, spend a bit more money get a decent regulator. I have lost fish from CO2 poisoning from this regulator as it cant regulate properly and has a mind of it own. Buyer beware.

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!

The Fzone CO2 regulator is very easy to fit. The manual is tiny but has all the information you need to git the regulator. Very good product but would recommend for anyone fitting it to an aquarium that you fit a longer tube from Regulator to Pump hose. This is so you can twist the regulator off when changing Co2 bottles without the small thin pipe getting turned on itself which is pretty difficult due to the mini pipe being very think and not playable to turning over.