Dennerle BIO CO2 Supply Bottle

Replacement bottle(s) for Dennerle Bio-CO2 Systems for use in freshwater aquariums. 

BIO CO2 Supply Bottle

Replacement bottle for Dennerle Bio-CO2 Systems for use in freshwater aquariums. 

Highlights:

• Control gel for a stabilized CO2 production
• For a constant CO2 supply for at least four weeks
• Made from renewable raw materials
• Available in a single or two pack