blanden.adam
Team RC
I am always reluctant to try human recipes on fish unless I can find information in the marine biology literature where cases have been tested.
I do actually do ginger snaps but I do not know if they work. I think that they work, but who really knows. Sort of like how you test PO4
This is a valid point, but I would go a bit farther:
Ginger is purported (and likely does work for some people) in humans is for nausea and "digestive health" (whatever that means). When people say that it "works for parasites in humans," what they mean is ginger may have a positive effect on some vague notion of digestive health, which might help the body digest and expel intestinal parasites (benzimidazoles and other proven pharmaceuticals are a better bet). None of these things are relevant to ich.
Folk medicine is a great place to start looking for pharmaceuticals, and has yielded large dividends in the past. This does not mean that because something is/was used in folk medicine that it actually has medicinal value for anything, either in humans or in fish