Maintain optimal water quality in your aquarium with API Stress Zyme Aquarium Cleaning Solution in a compact 30mL size. This powerful formula contains beneficial bacteria that digest organic waste, reducing maintenance and promoting a balanced ecosystem. Its small size makes it ideal for smaller tanks or travel, ensuring a clean and healthy environment wherever you go. Offers a compact and portable option for treating smaller aquariums or for travel use Contains beneficial bacteria that aid in breaking down organic waste and reducing ammonia and nitrite levels Easy-to-use formula, simply add the recommended dosage to the aquarium as directed to maintain a clean and balanced aquatic environment