The Green Stuff/ super concentrate (aquaculture grade Malachite Green and Formalin) - used to control protozoa (costia, ich, etc...), skin bacteria (ulcer disease, etc...), Fungus (saprolegnia) and as a general antiseptic treatment for ponds. Also recommended treatment for aquirium fish. Similar to "Paracide Green" but two times the strength. We recommend using once per month. |