Eco Labs BSDT32 Broad Spectrum Disease Treatment, 32-Ounce Use for disease caused by Ichthyophithirius (Ich), Chilodonella, Costia, Oodinium, Trichodina and fungal infections Formulated with Malachite Green and Formalin Malachite green and formalin are more effective and less toxic in combination than when used individually Treatment that can be used in water temperatures as low as 50-Degree F Do Not use with other medications