- Use 5 mL(1 tsp) for each 20L(5 US gallons) of new water.
- May be added to aquarium directlym but better if added to new water first.
- If adding directly to aquarium, base fose on aquarium volume. Sulfur odor is normal.
- For exeptionally high chloramine concentrations, a double dose may be used safely.
- To detoxify nitrite in an emergency, up to 5 times normal dose may be used.
- If temperature is >30 Degrees C and chlorine or ammonia levels are low, use a half dose."