Bio Tonic by White Crane
Use as a disinfectant and water conditioner for all kinds of fish and aquatic animals. Prevents growth of all kinds of fungus and rots.
Keeps water clear and free of bad smells.
Usage: 1 spoon (1 gram) per 50 liters of water. Use every time new fish are introduced to the aquarium or every time a water change takes place.
Can be used as frequent as needed.