Reef primer will clean away: Zoanthid Eating Nudibranchs, Montipora Eating Nudibranchs, Acropora Eating Flatworms, Brstlworms, Zoanthid Eating Spiders, Red Flatworms, Filamentous Hair Algae, Rapid Tissue Necrosis, Slow Tissue Necrosis, Bacterial Infections, and More. Reef Primer is gentle on your coral and wont trigger a stress response due to the dipping process. For complete protection, simply dip your corals or frags in the Reef Primer solution for 5 minutes. Ingredients: Potassium Salts