As the phase implies, it is quite literally a dip into freshwater. This can be a useful way of giving immediate relief from parasitic infections. Freshwater kills the parasites clinging to the fins, body and gills but does little or no harm to the fish if the water is prepared to exactly the same temperature and pH of the tank from which it is taken. Immersion times vary between 20 seconds and 2 minutes, depending on the constitution of the fish involved. If the fish begins to look distressed, remove it back to the original tank water immediately. Any small, clean aquarium can be used as the fish need never to be allowed out of the catching net. One or two dips each day can prove very effective against many diseases.

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