Waterlife medizin p treats a wide range of parasite infestations such as white spot, velvet, costia, trichodina, and cryptobia in addition to fungal infections. Medizin p can also be used as a disease preventative during spring and autumn. Medizin p comes with full instructions for use in different types of ponds and comes complete with a handy measuring cup to make dosing as simple as possible. It is safe with all pond fish and plants and will not damage filtration bacteria.