101-104 NO.1 Amazonian101-105 NO.2 Malayan101-106 NO.3 African101-107 Three Bottle SetCO2 Advance System Tropical Forest series No. 1,2,3 are among the world safest small CO2 cartridge, designed
specifically for the planted aquarium. The sterile carbon dioxide not only has disinfectant properties, but also produces the fragrance of a natural forest, deodorizing aquarium water and enhancing
relaxation effect of your Nature Aquarium.No. 1 Rich Jungle fragrance of the AmazonNo. 2 Fresh pristine forest air of the BorneoNo. 3 Sweet tropical jungle fragrance of the West Africa .*Original
connection pitch and safety seal