Reef Primer is a premium dip for your corals and frags. Use in your acclimation routine, Reef Primer put all odds on your side to eradicate the problems caused by: 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.