Fluval Bio CO2 Refill Pack

Required to kickstart the biological fermentation process Produces CO2 within 24 hours for a lush planted aquarium Professionally crafted yeast for rapid-start fermentation and maximum CO2 production for your plants In combination with the Activator yeast, Booster tablets jump-start the fermentation process Air-tight, aluminum-lined sachet for consistent quality and storage for up to 2 years Each refill pack contains 4 yeast sachets and 4 booster tablets