How is it possible for Stephane to have ich without any new additions to the tank? The following may explain.
"Ich (Ichthyophthirius multifiliis) or the equivalent marine form, Cryptocaryon irritans, are protozoan ectoparasites commonly encountered on ornamental fishes. Both parasites can cause significant mortalities especially when fish are in a crowded situation or experiencing various levels of stress. Both protozoans may be present on fish as a carrier state infection, mainly on wild-caught fish or fish that have been cultivated in ponds. The carrier state infection is a rather common condition and a major means for the spread of ich in the aquarium fish trade."
You may read more
here.
What a long thread we created :D :D :D My last post on this subject, I promise.
[ 20 September 2002, 00:45: Message edited by: pirate ]