CARTON / QB=6pcs. Reef Essential® Dual Dip™ serves as both a pretreatment for new corals and a remedy for existing ones. By treating your inhabitants before introduction, it reduces the risk of outbreaks and stress. It targets a range of coral parasites, including flatworms, bristleworms and nudibranchs, while also helping to treat tissue necrosis, bacterial infections and more. Removing these parasites and infections as they appear is vital for the longevity of your corals.