API Stress Coat 

Stress Zyme is a biological filter additive containing live bacteria that improves the development of the biological filter and helps clean a dirty aquarium.

API Stress Zyme

Stress Zyme is a biological filter additive containing live bacteria that improves the development of the biological filter and helps clean a dirty aquarium.

Stress Zyme can be used with freshwater tropical fish, marine fish, invertebrates and coldwater species. Stress Zyme will not harm aquatic plants.