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CO2 Injection

While beginning hobbyists don’t need CO2 injection, many advanced hobbyists do. For a reef aquarium, a calcium reactor, like the AquaMaxx nano calcium reactor, constantly provides major and minor elements for coral growth by melting crushed coral media. In addition to the reactor and media, a CO2 cylinder, aquarium CO2 regulator, and CO2 tubing is necessary.

Some freshwater planted tanks use CO2 injection. While a low-tech planted tank does not use CO2 injection, a high-tech planted CO2 aquarium will use a CO2 system that includes a CO2 diffuser, CO2 bottle, CO2 regulator, and CO2 tubing.

Want to know how to use CO2 injection? Our aquarium experts are available to guide you.


House Brand (CO2)

CO2 Cylinder

From $84.99

Milwaukee Dual Gauge CO2 Regulator w/ Solenoid


Tunze CO2 Dual Gauge Regulator
Needle Valve For CO2 Regulator


Fluval Pressurized CO2 Kit - 45g
Fluval Pressurized CO2 Kit - 95g
Dennerle CO2 Check Valve

House Brand (CO2)

CO2-Proof Tubing - Black

From $9.90

Seachem Glass U Tube (10mm Wide)
Seachem Glass U Tube (20mm Wide)
Fluval Ceramic CO2 Diffuser
CO2 Brass Check Valve


Dennerle CO2 Complete Kit
CO2 Paintball Adapter (CGA-320) - Ultum Nature Systems

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