Spotex is a liquid water conditioner additive effective against white spots and other parasites in freshwater and saltwater fish. Add 1 ml on day 1 and day 3 for every 40 liters. Usage: aerate the water well, keep feeding the fish, turn the lights off, don't reduce the water too much, don't use active carbon and uv lamps, and increase the water temperature by 2-3°c. In very severe cases, the same amount could be used on the fifth and seventh days. At the end of day 7 and the day after that, the water should be changed. Active carbon could be used to clean the water completely. Shake well before using. Add to the aquarium directly. Make the application in a separate quarantine tank if possible. Do not overdose. It's harmful for the invertebrates and crustaceans, safe for the plants.