Clean away Zoanthid Eating Nudibranchs, Montipora Eating Nudibranchs, Acropora Eating Flatworms, Bristleworms, Zoanthid Eating Spiders, Red Flatworms, Filamentous Hair Algae, Rapid Tissue Necrosis, Slow Tissue Necrosis, Bacterial Infections, and more from your reef. Reef Primer is a formula that will not trigger a stress response in your coral due to the dipping process, and is gentle on your coral as well. Dip your corals or frags in the Reef Primer solution for 5 minutes. Caution: Do NOT ingest this product. Use in a well ventilated area. Avoid contact with skin, eyes, and clothing. Wash hands after use. May cause skin, eye, and respiratory irritation. NEVER ADD REEF PRIMER DIRECTLY TO YOUR AQUARIUM. TO BE USED AS A CORAL DIP ONLY. KEEP AWAY FROM CHILDREN.