Water conditioner for freshwater aquaria, for the safe, fast and effective elimination of Ichthyophthirius multifiliis (cause of white spot disease) and many other single-celled skin parasites (e.g. Ichthyobodo, Apiosoma, Trichodina, Chilodonella) and also mycoses. This product is colourless in water and therefore particularly suitable for use in display aquaria or in batteries. sera med Professional Protazol is very well tolerated by plants and invertebrates (e.g. snails and shrimps).