Aquarium CO2 Systems

Give Your Aquarium Plants the CO2 They Need to Grow and Flourish

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How a CO2 System Will Give You Better Plant Growth in Your Aquarium

If you're constantly replacing aquarium plants because they die, become covered in algae, or simply fail to thrive, you're not alone - almost every aquarium owner faces these frustrations. Yet, you've probably seen beautifully lush, healthy aquariums like and wondered, "How do they do it?". The good news: there's a simple secret behind their success. Let's dive in and discover exactly what they're doing differently - and how you can achieve the same stunning results.

Aquarium CO2 System shown in a planted tank

No CO₂ = No Photosynthesis = Dead Plants

Diagram of Photosynthesis with and without CO2.

"Photosynthesis" - We all learned about it at school: it's the process by which plants use light energy to convert carbon dioxide and water into glucose and oxygen. Simply put, without enough CO₂, aquarium plants can't produce the sugars they need, causing them to die. Thankfully, providing your plants with CO₂ isn't complicated. Just as you use an air pump for oxygen, Aquarium CO₂ Systems can easily add carbon dioxide to your tank - that's where we can help!

How CO2 Supermarket Can Help You

Since 2010, we've equipped aquascapers worldwide with everything they need to create stunning planted aquariums. Our convenient, ready-to-use CO₂ Systems make it effortless to achieve lush, vibrant plant growth by effectively diffusing CO₂ into your aquarium water.

Aquarium CO2 System from CO2 Supermarket.

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Our Aquarium CO2 Systems Comprise Of

Easy CO2 Adapter (optional)
Gas CO2 Regulator
Bubble Counter
CO2 Diffuser
CO2 Drop Checker
High-grade CO2-resistant tubing

Let's explore the role of each of these parts...

Easy CO2 Adapter

Photo of a SodaStream adapter sold in CO2 Systems from CO2 Supermarket.

One challenge with CO₂ systems can be sourcing suitable cylinders. Our systems offer optional adapters, allowing you to conveniently use SodaStream, disposable welding, or paintball CO₂ cylinders - all available from local stores. Simply choose your preferred adapter to ensure an easily accessible CO₂ supply.

Gas Regulator

A gas regulator reduces the high pressure from the CO₂ cylinder to a safe, usable level for your aquarium. Our aquarium-specific regulators are safe, easy to install, and simple to operate. Each regulator also includes an integrated solenoid valve, allowing you to automatically turn off CO₂ using a timer when your aquarium lights are off and plants aren't photosynthesising.

Bubble Counter

A bubble counter lets you easily monitor and adjust the CO₂ dosage entering your aquarium by counting bubbles per minute—around 60 bubbles/min is ideal for a 150L tank. Our bubble counters also feature an integrated check valve, preventing water backflow and protecting your regulator from damage.

CO2 Diffuser

Remember learning in science class that increasing surface area speeds up reactions? The same principle applies to CO₂ diffusion in your aquarium. Smaller bubbles mean greater surface area and more effective CO₂ diffusion. That's where our 'atomizer' diffusers excel, producing extremely fine bubbles for optimal CO₂ diffusion and healthier plants.

CO2 Drop Checker

A drop checker placed in your aquarium changes color to indicate CO₂ levels: yellow for high, blue for low, and green for ideal. This removes guesswork, letting you precisely adjust CO₂ dosing using the regulator and bubble counter. Our drop checkers come with pre-mixed solution for quick, easy setup.

CO2-Resistant Tubing

Photo of co2-resistant polyurethane tubing.

You'll need tubing to connect your equipment, but standard PVC or silicone air pump tubing isn't suitable—it reacts with CO₂ and can crack or leak. Instead, we provide high-quality, CO₂-resistant polyurethane tubing that remains safe and leak-free.

Our Commitment to Customer Service

Over the years, we've helped thousands of aquascapers turn their dream planted aquariums into reality by guiding them through successful CO₂ system installations. All our equipment includes clear, step-by-step instructions, and our dedicated team is always here to support you every step of the way.