Ziss Aqua CO2 Refill Combo

1 CR-160 Generation Refill. Ziss CO2 Generation Kit ZCR-160 contains No. 1 solution and No. 2 solid. Fill the top of the ZC-II with the #1 solution and insert the #2 solid into the bottom of the ZC-II. After that, control the number of drops of #1 solution in the #2 solid with the control button.   ZCR-160 kit generates 160g of CO2. # 1 solution and # 2 solids can be stored at room temperature. 160 g CO2 generation kit Can be used at an aquarium temperature of 5 ~ 40 oC Can be stored at room temperature