CO2 Systems & Accessories
Aquarium CO2 Systems & AccessoriesCO2 (carbon dioxide) is utilized by calcium reactors to dissolve media and release calcium into the reef aquarium. And, since nearly half the dry matter of any plant is carbon, CO2 is also a popular plant nutrient for freshwater planted tanks.
An aquarium needs a lot of oxygen because of the fish and corals living in it, but let's not forget about carbon dioxide (or CO2 for short), too. Plants need CO2 as much as animals need oxygen. However, CO2 is usually not as abund...ONLY$0.99