CO2 injection is one of the most effective ways to improve plant growth in a planted aquarium. By supplying a consistent source, CO2 helps aquatic plants grow faster, develop richer color, and compete more effectively against algae.

CO2 kits bring together the essential components needed to run everything from a pressurized system to a simple DIY setup. Whether you’re starting your first planted tank or upgrading an existing one, using a complete kit helps ensure compatibility and consistency from the start.

From compact setups for smaller aquariums to more advanced systems for high-demand aquascapes, CO2 kits provide a reliable way to support healthy plants that flourish. Alternatively, build your own system if you know which components your setup is missing! No matter where you are in your aquascaping journey, there’s a CO2 solution that fits.

Explore the collection to find a system that matches your tank, your goals (and maybe save a little along the way).

Do I need CO2 for a planted aquarium?
Not always, but CO2 significantly improves aquatic plant growth speed, leaf form, color, and overall health. It is required for growing more demanding plants and strongly recommended for setups with strong lighting.

What’s included in a CO2 kit?
Most kits include key components like a regulator, cylinder, tubing, and select accessories. Specific contents vary depending on the kit!

Is CO2 injection safe?
When set up properly, CO2 systems are safe and widely used in planted aquariums. Following recommended guidelines and using quality gear helps ensure reliable operation.