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!? It’s able to break down organic compounds that cause dangerous conditions such as ammonia and nitrate poisioning.
Best used in freshwater and saltwater when setting up a new aquarium.
Your fish will be happy and healthy with the help of API Stress Zyme.
Keep in a cool, dry place. No refrigeration necessary.