FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (2.5 L with solenoid))

What can I say it's a great little bit of kit very easily set-up, very uncomplicated, I have them on both of my tanks the same size and if you invest in a small wave maker and position the defuser directly under the wave maker, the wave maker circulates the co2 around the tank constantly and if you also have the outlet of the filter pushing the water in the same direction it acts as a vortex,so not only is the co2 distribution good it helps keep your tank cleaner I have it on a timer and he before the lights come on and off an hour before your lights go , that mixed with a good fertilizer routine and extra flow in your tank gives it everything you need for your plants to flourish and I have mine on a gravel substrate and if you do don't forget your root tabs

Lovely looking bit of kit, looks good along side the tank. Silent with no smells or leaks.Very easy to put together via YouTube videos and the mix is a breeze.For the 4L version, the optimum mix is 600g citric acid, 780g of baking soda and 900ml of tap water.The funnel and mixing cups that come with this are way too small so I ordered larger sizes for ease of use.The solenoid works flawlessly and the regulator seems good quality too.Co2 was produced through the diffuser in minutes.However a tip here.It takes around 24 hours for the pressure to reach correct operational pressure. I checked on it next morning to find it was releasing far too much co2 into the tank because the pressure had increased overnight.After tho it has settled into a consistent co2 injection.Another tip is to buy a co2 drop checker, which when positioned correctly in the tank gives an accurate indication of co2 levels for plant growth and fish safety.I've also ordered a better diffuser from Amazon which is meant to produce the smallest bubbles.Though to be fair the one the kit came with is perfectly adequate.First time co2 user so hoping to see a vast difference in plant growth and health.

Solenoid failed, contacted seller and Cheryl was amazing, no quibble replacement part and was is up and working againThnx

I’m am only two weeks in with this c02 reactor, but so far so good! FYI it has a uk plug, isn’t clear in the description. Easy to use, fairly easy to set up, and my plants seem to be liking it. Running at 1-2 bps I get a month before need to refill. Using 8hrs/day, so the guide is accurate. The only slight down side is that the adjustment value lacks feeling and is a bit fiddly to adjust. This is my first co2 setup so maybe they are all like that? I wouldn’t know.

Used initially for 2 months.Put unit away as not wNeeded.Used again but needle valve leaking co2.Contacted fzone.Who were veryhelpful. Said they would send me replacement regulator for 10 dollars.5 stars for customer service.

This Co2 Generator is very good and works great, It is Oder free and safe to use, It is a bit tall but can be hidden under the tank, my plants are growing healthier than before, over all a great addition to the hobby. the only issue is the needle valve takes a bit of working out but when sorted adding a timer will settle this. 5 stars well deserved.

This is my first CO2 system. Decent quality and easy to set up.No ingredients are included but cheap to buy. I highly recommend you check this system out on YouTube before you buy.Add the baking soda first then the acid as it's less reactive and covers the soda. Use cold water and pour slowly at 45 degrees. Make sure you have attached the filter and have the valve at hand as the reaction starts fairly quickly you have time to attach the valve but I wouldn't hang around. Make sure the needle valve is closed and you can attach the solenoid and fill the bubble counter with water and it's easier to connect the air line to the bubble counter before you attach it to the valve.It says 45min to 24hrs to pressurise. It hit 50psi almost straight away so I connected the airline (softened with hot water) and the diffuser on the other end. Used the suckers provided. It doesn't include a non return valve which will stop water going back into the cylinder. The needle valve is very sensitive but didn't take long to adjust to 1 bubble a second.Overall very pleased and it's cheap to run. I've got it connected to a smart plug timed to only be on when the lights are on.When refilling you may have some crystals in the bottom. Empty everything out and add boiling water just enough to cover the crystals. Leave it for 5 min then fill up with cold water as the cylinder gets really hot. Pour out the water and the crystals will be gone.

Not sure if this is faulty I have a 80 x 30 x 24 inch aquarium 1000ltrs with sump I bought the 4 ltr model but it only lasted 2 weeks is this about right gages did go up to 400ltr and do have aquarium checker.