Fluval - Bio Co2 Refill - (141.8954)

Designed for use will all Fluval Bio- CO2 Pro Low-Pressure CO2 SystemsProduces CO2 within a short 24-hour period (when mixed with sugar – sold separately)Each Refill pack includes: 4 Activator Yeast sachets and 4 Booster tabletsHigh-quality German Champagne yeast with stabilizers and nutrients for consistent qualityPre-measured for simple and accurate dosingEach Refill Pack provides long-lasting CO2 supply: Model 125 (up to 4 months), Model 250 (up to 2 months), Model 500 (up to 1 month)The Bio-CO2 Pro Refill Pack includes several pre-measured Activator yeast sachets and Booster tablets to quickly and conveniently kickstart the biological fermentation process in Fluval Bio- CO2 Pro systems.