Tetra Instant Ocean Biospira Saltwater 100 mL

Patented nitrifying bacteria make marine aquariums fish-safe instantly. Instantly make your marine aquarium fish-safe with BIO-Spira. Natural bacteria additive accelerates the establishment of the bio-filter by providing a patented mix of nitrococcus, nitrosomas, nitrosospira, and nitrospira bacteria. Requires no refrigeration.