Ziss Co2 Generator Ziss CO2 ZC-II is the completely new patented carbon dioxide generator by chemical neutralization. CO2 generation speed can be controlled by the speed control valve. The innovative pressure equivalent design can give safe and constant CO2 supply to the plant tank. Because ZC-II works by chemical neutralization, high purity CO2 can be generated instantly and CO2 generation is not affected by the temperature.If you use our Ziss ZCR-160 generation kit, the amount of CO2 generation is around 160g, which can be used around 45days in the around 100 Liter tank. Don't forget to add your generation kit: ZCR-160 Key Benefits: Controllable chemical CO2 generator Instant start & Constant speed Not affected by Temperature (5 ~ 40 oC) High purity CO2 (up to 99%) evolution Easy & Safe operation Rechargeable by Ziss 160g CO2 generation kit (ZCR-160) Integrated Pressure Relief Safety Valve Ziss CO2 Diffuser (ZD-200) included High quality material used All parts are Made in Korea Information Bio CO2 Generator Ziss CO2 (ZC-II) Generator Gradual Fermentation Controllable Neutralization No Yes No Yes Yes No (5 ~ 40 oC) OK (Not reported by Maker) 160g (ZCR-160) 14 days 45 days (under at 100 L tank) Contaminated with EtOH Almost Pure Yes (by fermentation) No