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CO2 Technic > Fluval

CO2 Technic Fluval

The Fluval CO2 system provides a straightforward, safe, and eco-friendly CO2 supply for aquariums up to 250 liters. The groundbreaking Fluval Bio CO2 system allows for precise CO2 dosing, promotes lush plant growth, and enhances water quality, making it perfect for both novice and seasoned aquarium enthusiasts.

Fluval Bio-CO2 Pro 125L
Fluval Bio-CO2 Pro 125L
Practical CO2 system for aquariums up to 125L
no pressurised gas cylinder necessary
safe & reliable, long range

The Bio-CO2 Pro system combines the safety of biological carbon dioxide production with the convenience of pressurized delivery. Offering simplicity and unparalleled performance in an easy-to-use format, Bio-CO2 delivers reliable and controllable CO2 through the naturally occurring fermentation process. With safe, low-pressure operation, it is the most secure, simple, and environmentally-friendly aquarium CO2 delivery system available.


Fluval Bio-CO2 Pro 125L
109.99 €*
Fluval Bio-CO2 Pro 250L
139.99 €*
Top-Seller!
Fluval Bio-CO2 Pro Refill
Fluval Bio-CO2 Pro Refill
activator for bio-CO2 system
CO2 for up to 4 months
simple & clean application

Fluval Bio-CO2 Pro Refill for refilling the Fluval Bio-CO2 systems. Contains 4x Activator and 4x Booster for up to 4 months of CO2 in the aquarium.


Fluval Bio-CO2 Pro Refill
9.49 €*
Fluval CO2 Permanent Test
Fluval CO2 Permanent Test
constantly displays the CO2 content
easily monitor CO2 levels
elegant glass body

The Fluval CO2 continuous test fulfils the important task of monitoring and permanently displaying the carbon dioxide content in the aquarium water.


Fluval CO2 Permanent Test
12.99 €*
Fluval CO2 SystemDive into the realm of the Fluval CO2 System, an essential component for any aquarist looking to optimize the growth and health of their aquatic plants. Fluval’s innovative solutions enable you to integrate precise and controlled CO2 supplementation into your aquarium, fostering lush plant growth and enhanced water quality.

The Fluval Bio-CO2 Low-Pressure System is a groundbreaking innovation that marries the safety of biological CO2 production with the convenience of a pressurized gas system. Ideal for aquariums up to 250 liters, it offers easy handling along with reliable and adjustable CO2 supply. Utilizing a natural fermentation process with sustainable materials like sugar and yeast, this system is not only eco-friendly but also exceptionally safe for low-pressure operation.

The system’s high-quality stainless steel reaction chamber ensures a 100% tight silicone seal, preventing any CO2 leakage. An adjustable bubble counter with a precision valve and a nano-bubble diffuser ensure even and efficient CO2 distribution throughout the aquarium. Additionally, the system is equipped with an overpressure/pressure relief valve for added safety.

The Fluval CO2 technology is suitable for both seasoned aquarists and beginners eager to elevate their aquarium care. With the Fluval Bio-CO2 Pro System, you get everything you need for a successful start, including a detailed instruction manual that eases the setup process.

With a Fluval CO2 System, you can be confident that your aquarium is receiving the optimal amount of CO2, essential for healthy plant growth and improved water quality. Choose Fluval Bio CO2 for a simple, safe, and sustainable way to provide your aquarium with CO2.
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