Description UENO JAPANESE YELLOW POWDER 1 EACH 5G It works to kill bacteria both internally and externally. It also works to treat all freshwater ornamental fish that have the following diseases: ***Ich***Fungus*****Early stage dropsy*****Fin rot***Mouth disease*****White Spots***Gill fungus.    How to use: Change new water and put a pinch for 2-3 liters of water until the water becomes yellowish and not too dark in color. You can reduce the water, soak the fish in yellow water