New products


Dennerle Bio CO2 Bio Starter Set


New product

Dennerle CO2 Plant Fertilizer - Bio Starter Set

More details

This product is currently out of stock!

£ 10.99

More info

Pro Shrimp's comment: Bio CO2 is not as effective as a pressurised injection CO2 system, but it's only a fraction of the initial investment. Sufficent enough for a basic CO2 supply especially for smaller aquariums. These systems use yeast bacteria to produce CO2, which then is transferred into the water column. Bio CO2 systems do not need a power supply. We offer three different types of Bio CO2 systems from the most basic Starter Pack up to a complex system for up to 120L which includes thermal control containers and bubble counters.

This is the most basic starter set. If you need a bubble counter to observe the amount of CO2 released into the water and additional accessories we would advise to go with the Bio-60 or Bio-120 Starter Kits.

Complete set for beginners, comprising:

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

The simple and safe method of CO2 fertilization

  • CO2 production and supply are carried out fully automatically and in the right quantities.
  • Nothing needs to be set or measured. The ultimate in simplicity and convenience.
  • This makes DENNERLE Bio-CO2 ideal for all those who are as yet unaquainted with CO2 fertilization and for those who may wish to try the method out. After only a few weeks of CO2 fertilization, the results become evident: Plant growth improves substantially, the plants are greener, stronger and display greater vitality. The whole aquarium is brought to life.



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.

Trusted Shops Reviews