Fauna Marin Dino X is a liquid that works against dinoflagellates frequently found in marine aquaria. It successfully treats dinoflagellate outbreaks in reef aquariums without harming corals and other invertebrates. Dino X is intended for use in saltwater aquariums only. Recommended Dosing: Use5 ml Dino X per 100 L (26 gals) of aquarium water To prevent overdose, it is essential to calculate the exact volume of aquarium water.