CO2 Bio supply depot

The easy, safe way to add CO2 to your aquarium:

The production of CO2 and the additon of the correct amount to your tank at all times run autonomously. There is no need to adjust or to measure anything - this is as easy and comfortable as CO2 addition can get. DENNERLE Bio CO2 is the perfect choice for all those who start fertilizing their tanks with CO2 or who just want to give this method a try.

After as little time as a few weeks after you start to fertilize your plants with CO2 you will see an improvement:
The plants grow much better, their colors intenisfy, and they look stronger and more vivid.
The entire aquarium appears to be much more alive.

The DENNERLE Bio CO2 supplying system with CO2 Control Gel produces an almost constant amount of CO2 for over one month!
Every CO2 supply depot produces far more than 300,000 CO2 bubbles, and supplies your aquarium with an optimum amount of this important nutrient day by day.


Instructions of use
- screw off cap and take out starter capsule
- open starter capsule
- pour its content into the bottle
- fill the bottle with 20-25 °C warm water up to the marking, screw the cap back on and make sure it is tight
- break or cut off the lift-up lid
- place the bottle in the thermo box or in the holding box
- connect the CO2 hose

CO2 production will start after 24-48 hours.

Please read the instructions included in your Bio CO2 set.