hw Odinex works reliably against Oodinium of sea water fish. With the smallest signs by Oodinium is to be applied hw-odinex immediately. Composition: Copper 2,550 ppm, vanadium 100 ppm, sulfates 4,950 ppm. 200 ml sufficiently for 100 litres water. 1000 ml sufficiently for 500 litres water.Do you have questions about this article ?