[Dennerle] Bio CO2 Starter Set for Planted Aquarium

• Uniform CO2 production with CO2 control gel.
• DENNERLE Bio-CO2 exploits the well-known fact that yeast cells are able to produce CO2 from sugar in the absence of oxygen.
• A problematic aspect is the fact that a fermentation process with pure sugar normally begins at a very fast pace, only to drop away substantially after just a few days. As a result, the aquarium receives too much CO2 at the beginning, and too little shortly after.
• In contrast, DENNERLE Bio CO2 with CO2 control gel produces a virtually constant level of CO2 continuously for over 30 days, that is, for more than a month! Each CO2 bottle produces well over 300,000 CO2 bubbles. This assures your aquarium of an ideal supply of CO2 every day.

Complete set for beginners, comprising:

• CO2 bottle with CO2 Control Gel and starter capsule
• Mini-Topper
• Bottle support
• CO2 hose

CO2 Control Gel Refills available (sold separately).