CO2 Injection for Aquariums

While beginning hobbyists don’t need CO2 injection, may 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 diffusor, CO2 bottle, CO2 regulator, and CO2 tubing.

Want to know how to use CO2 injection? Our aquarium experts are available to guide you.
39 Results
Milwaukee Dual Gauge CO2 Regulator w/ Solenoid

Milwaukee Dual Gauge CO2 Regulator w/ Solenoid

Dennerle CO2 Check Valve

Dennerle CO2 Check Valve

Tunze CO2 Dual Gauge Regulator

Tunze CO2 Dual Gauge Regulator

Seachem Glass pH Checker - pH Level Indicator (25mm Diameter)

Seachem Glass pH Checker - pH Level Indicator (25mm Diameter)

Seachem Glass U Tube (10mm Wide)

Seachem Glass U Tube (10mm Wide)

Seachem Glass U Tube (20mm Wide)

Seachem Glass U Tube (20mm Wide)

Seachem Glass Beetle CO2 Diffuser - Pollen Style (30mm Disc)

Seachem Glass Beetle CO2 Diffuser - Pollen Style (30mm Disc)

Seachem Glass Bubble Counter - Monitor CO2 Output (17mm Diameter)

Seachem Glass Bubble Counter - Monitor CO2 Output (17mm Diameter)

Fluval CO2 Aquarium Indicator Set

Fluval CO2 Aquarium Indicator Set

Fluval CO2 Indicator Solution - 10ml

Fluval CO2 Indicator Solution - 10ml

CO2 Brass Check Valve

CO2 Brass Check Valve

Dennerle CO2 Complete Kit

Dennerle CO2 Complete Kit

Seachem Glass Beetle CO2 Diffuser - Pollen Style (27mm Disc)

Seachem Glass Beetle CO2 Diffuser - Pollen Style (27mm Disc)

CO2 Paintball Adapter (CGA-320) - Ultum Nature Systems
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CO2 Paintball Adapter (CGA-320) - Ultum Nature Systems

Seachem Glass Slanted CO2 Diffuser - Pollen Style (15mm Disc)

Seachem Glass Slanted CO2 Diffuser - Pollen Style (15mm Disc)

Seachem Glass Bubble Counting CO2 Diffuser - Pollen Style (17mm Disc)

Seachem Glass Bubble Counting CO2 Diffuser - Pollen Style (17mm Disc)

Bio CO2 Set for Nano Planted Aquariums 2.5 - 15.5 Gallons - Dennerle

Bio CO2 Set for Nano Planted Aquariums 2.5 - 15.5 Gallons - Dennerle

Fluval Ceramic CO2 Diffuser

Fluval Ceramic CO2 Diffuser

AquaMaxx Nano CO2 Regulator
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AquaMaxx Nano CO2 Regulator

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