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))

After carrying out a lot of research I decided this system would be the best bang for bucks system for my 120L system. I've been running the generator for 3 months now and I'm really impressed with it. It was easy to set up and the raw ingredients are cheap and easily purchased from Amazon. The powders are added and then the water is added very slowly with the bottle at a 45 degree angle. pouring it slowly slows down the chemical reaction and stops you wasting gas as you screw the regulator on to the bottle. I was getting 2 weeks of CO2 from one charge and when I added a CO2 reactor that figure went up to almost 4 weeks. 4 weeks of CO2 from 200g of acetic and 260g of Bi Carbonate is in my opinion amazing. The regulator is easy to adjust and the solenoid valve works as it should. The kit itself contains everything you need, except the raw materials and a drop checker. These can be picked up cheaply from Amazon. CO2 has made a big difference to my plants and algae growth is virtually zero now. This kit has been the best piece of kit I have bought for my aquarium in a long time. If you want to add CO2 to your system this is a great straight out of the box solution.

This is excellent. I was wary of complicated systems and setups but on trying this one its an easy mix of citric acid and bicarb and Ive had over a month of CO2 so far. Easy to set up and easy to adjust the bubbles per second. Has made a visible difference to my plants. Green and lush and visibly improved growth. You can put it on a timer easily with the included solenoid. The bottle is top quality too. Excellent set up and super glad Ive added this system to my tank.

Great product, easy to use just the manual was really poor. It never mentioned the solenoid and how to use it, I had to use YouTube and the bent glass but that sits on the tank where the tubes connect is really fragile and not very well made, I broke mine first day. Other than that it’s a great product my plants have doubled in growth.

The cheapest way as far as im concerned when introducing Co2 to your tank. This is so easy to set up, I purchased this item about two weeks ago and found the diffuser not very good so removed it and purchased an inline diffuser fitted to the outlet pipe close to the filter as possible. I also have the solenoid on a timer so its not running 24hrs, this is a must so you dont hurt your fish. Im running at one bubble every five seconds for eight hours and it works for me and *dont forget to purchase a drop checker*.

I took a while to decide on what would be the best CO2 system for my tank and settled for one where I did not have to keep buying replacement canisters and I could buy the ingredients cheaply on Amazon. I have now been using this for a fair few months and it has been a great addition to my planted tank. It was very easy to set up and with the addition of a couple of YouTube videos made it even easier. The size of the canister is not too large but I still need to think of a way to hide it. Make sure that you put the plastic tubing into hot water first so that you can get a good seal on all the components and you should then have no leakage of CO2. I did buy a different diffuser from Amazon as that seemed to be the only weak point but through my research I knew this beforehand.

Wouldn't recommend at all. Barely a month in of using and the solenoid has already stopped working. Avoid.

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.

I’ve purchased the FZONE 2.5L Aquarium CO₂ Generator System (with solenoid) three times now, and unfortunately each unit has had some kind of issue. When the system is running properly, it does its job well. It produces stable CO₂, the regulator and needle valve allow decent control, and it’s a convenient DIY-style setup for planted tanks without going full pressurized cylinder. For the price, it’s an attractive option. However, reliability has been inconsistent. I’ve experienced failures with different components across the units, which is frustrating — especially when running CO₂ on a planted tank where stability is important. Overall, it’s functional and affordable, but quality control could definitely be improved. I’d rate it 3/5 — good concept, just needs better durability.

I bought the FZONE 2.5L Aquarium CO₂ Generator System as a gift for my husband, and he absolutely loves it! 🐠💚 He’s really into planted aquariums, and this CO₂ system has made a noticeable difference in how healthy and vibrant the plants look. The setup was straightforward, and the instructions were easy for him to follow. He didn’t need extra tools or complicated tweaks to get it running smoothly. He especially appreciates that the system seems sturdy and reliable — no leaks or messes so far. The bubbles are steady, and it looks like it’s helping the plants grow faster and greener. Overall, this was a thoughtful gift that hit the mark. My husband is very happy with it, and I’d recommend it to anyone looking to boost their aquarium plants without breaking the bank!

No seal problems, all parts there, instructions are mostly good. If you dont have a scale, you'll need to do a little math. I added 13.8 Tablespoons Baking Soda, and 8.3 Tablespoons Citric Acid with my 300ML water and it seems to be working out... but again do your own math and make sure do NOT take my word for it. It's been a few weeks and my plants seem happy and my fish are alive so those measurements haven't killed my 29G just yet... Anyways, the setup seems ideal and is decent price as far as I can tell. It does the job well, and hasn't failed me yet. Seems like it's decently made so I'm happy with my purchace. Would buy from this seller again. On a final note... buy a CO2 drop checker. I did some math and figured 1 bubble per 2 seconds was good.... now I'm using 4 bubbles per 1 second. It will help you figure out how much to be adding to your tank and save you mental stress trying to guess. Just take it SLOW and figure out what rate gets your checker green fastest and keeps it green without going into the yellow (danger) zone.

今まではボンベを買って月に一本のペースで交換してましたが今回初めの化学式ボンベを購入しました 重曹とクエン酸(別売り)があれば水を入れて その日の内に添加可能で いい買い物をしました。逆流防止弁とタイマーを別で購入して設置したので ライト エアレーション co2 のオン オフが自動化したので 朝のエサやりと週一の水換えのみなので すごく楽になりました！設置初日なので星4にしときます！

Super facile a monter grace au video sur Amazon. Ayant le trouvais plus en plus difficile a échanger mes bouteilles de gaz vide je me suis passée en bio. Mon bac a 180 litres et les produits étaient inutile - aucun bulles. Je trouvais cette système production CO2 par mode bio sous pression. Allez - hop - au panier. Livré ce matin, il m'as pris une vingtaine de minutes de montage. 15 minutes âpres le montage en suivant les instructions au video, J'ai démarrée le Solenoid et les bulles sont arrivées bien fin. Un peut de réglage et je pense que je serai très contente de mon achat. Produit de bon qualité. ** Modification d’évaluation: Suite au montage la système a fonctionné sans problème. Je viens de remplir facilement la bouteille pour la deuxième fois ce matin le 6 juillet. L'aiguille est plus au milieu de la partie vert. Je vais surveiller combien de temps pour ce recharge.

Genial para fomentar el crecimiento de las plantas de acuario