eSHa Exit is an effective treatment against all 'Spot' (lch) diseases. eSHa Exit treats whitespot, import spot, pepper spot, blackspot and coarse spot. Exit also cures Velvet.   Product Summary: - Acts fast against Whitespot and other Spot parasites.  - Safe for use with sensitive tropical fish. - Can be used in conjunction with eSHa 2000  Treats 2000 litres   530 US gallons   440 UK gallon