Cuprazine – Copper based remedy for fresh water fish. Anti-Koi sleeping disease – Proven formula –Strictly not to be used with invertebrates and scaleless fish – Successfully tested against Koi sleeping syndrome and all other external parasites. One remedy for Koi sleeping disease, white spot (ich), anchor worm, fish lice, gill flukes, costia parasite, arowana parasites, flowerhorn diseases, discus discoloration, discus external parasites, gold fish parasites and all external parasites. A broad spectrum anti-parasitic copper based remedy for fresh water fish. Effective against external free-swimming parasites and all other disease causing external parasites. Attention while using PARACIDOL-FW: Remove carbon and zeolite from filter. Replace them after 10 days of treatment. The usage shall be on day 1, 2, 3, 5 & 7 or as advised by your aquatic professional. Stop treatment when the symptoms disappear. Do a 25% water change daily if necessary.