Malachite Green is a chemical dye with antimicrobial properties to help fight disease. It has many uses from treating external parasites, such as ich, in both freshwater and saltwater environments as well as treating certain fungal diseases. Treats: Egg fungus, ich and other common external parasites, oodinium (Velvet), Saprolegnia Treatment: Bath: Add 1-2 mg per… Continue reading Malachite Green