API Stress Zyme - 30mL
To improve biological filters and clean dirty aquariums best, use API Stress Zyme.
This formula is super-potent as it contains over 300 million live bacteria in every teaspoonful which break down organic compounds that cause dangerous conditions such as ammonia and nitrate poisoning.
Best used in freshwater and saltwater when setting up a new aquarium.
Keep in a cool, dry place. No refrigeration necessary.
Size: 30mL, 118mL, 237mL, 473mL & 3.8L