5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit, co2 Aquarium kit diy co2 kit for aquarium with Regulator Solenoi
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
We track Hygger CO2 5L Aquarium CO2 Generator System Carbon Dioxide alongside 29 other paintball products, comparing it on rating, how many people have rated it and what it currently costs. According to the listing: Hygger CO2 5L Aquarium Co2 generator kit includes regulator with pressure gauge, solenoid valve, bubble counter, check valve, diffuser, tubing, suction cups. Automatic pressure relief valve activates when CO2 pressure exceeds 40KG. After adding 600g Citric Acid + 600g Baking Soda + 900ml Water. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.5 out of 5 from 8 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Hygger CO2
- Amazon rating
- 4.5 / 5 from 8 ratings
- vs Paintball
- 0.1 below the category median of 4.6
- Rank in category
- 16 of 28 rated paintball we track
- Price position
- Towards the top of the range (category spans £5.99 to £119)
- How proven
- Moderate review volume
How it compares in Paintball
Across the 28 rated paintball products we track, the typical score is 4.6 out of 5. This one sits at 4.5, which is around the middle of the category. Ratings alone will not separate it from its rivals here, so price and the specifics below matter more than the star count.
It carries 8 ratings against a category median of 24. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the upper third of a category running from £5.99 to £119, where the midpoint is about £19.93. Paying above the category norm needs a reason beyond the rating, because the score alone does not justify the gap here.
Worked out from the 30 paintball products in our catalogue, not from the brand's own claims. How we rank →
Key features
- Complete Aquarium co2 kit: Hygger CO2 5L Aquarium Co2 generator kit includes regulator with pressure gauge, solenoid valve, bubble counter, check valve, diffuser, tubing, suction cups, and all necessary accessories for planted aquariums. Easy to set up, even for beginners. Easy to adjust the bubbles per second, easy reading by bubble counter.You need soda, citric acid and water, get easily in any supermarket or at home.5L aquarium co2 generator system suitable for Medium tank from 60L to 300L.
- Premium Safety Protection: Automatic pressure relief valve activates when CO2 pressure exceeds 40KG. After adding 600g Citric Acid + 600g Baking Soda + 900ml Water, the CO2 pressure value will probably reach the red 35, but don't worry, as long as it doesn't exceed 40, it is safe and normal. If you are really worried, you can add 400g Citric Acid + 400g Baking Soda + 600ml Water next time, so that the CO2 pressure after the reaction is within the green range.
- Professional Factory: 12V waterproof solenoid valve prevents leakage risks for complete safety.Professional Factory,our 5L CO2 bottles are constructed from premium 1.2mm SUS 304 stainless steel - 20% thicker than standard tanks. Far superior to plastic bottle generators, they're more durable, stable, safe, and high-pressure resistant.
- High Precision -- having the 12V solenoid on a timer, you can specify when you want CO2 injection on and for how long. Bubble counter with check valve built-in. It stops water from back flowing into your CO2 tank.Built-in solenoid valve with power cable enables automatic CO2 shut-off when aquarium lights turn off, preventing wastage and maintaining stable pH levels during night cycles．Tips for All Users: The required powders to generate CO2 gas are not included; you will need purchase the citric acid and sodium bicarbonate powders separately.
- Efficient Diffusion: High-quality bubble counter and diffuser ensure optimal CO2 dissolution into aquarium water, promoting healthy plant photosynthesis and vibrant aquatic plant development 60L up to 200L. Stable CO2 output once dialed in.Easy installation: Complete kit with detailed instructions, flexible tubing, multiple suction cups, and funnel for straightforward setup without requiring additional tools or components for most aquarium configurations.
- NOTES: (1) The motorized valve may make a soft sound when turning on/off — this is normal and not a fault. It runs quietly during normal operation;(2) Soak the diffuser in your aquarium for 24 hours before use. If bubbles aren't released right away, wait briefly due to low initial air pressure. If problems continue, check tube connections for leaks;(3) The motorized valve is not waterproof. Avoid contact with water to prevent damage.
