I read a thread on using ginger root to HELP with ick. This created a lot of controversy and arguments due to words being used like "cure". Thats why I said help. I found it when I was looking for some help with Ick on a new powder blue tang in my DT. I grated the root I bought from my grocery store into my homemade food mix at feeding time. I let it sit for 5 to 10 min before "serving". I have seen white spots that could have been Ick disappear. I have also seen it back, but then disappear again. Not sure what it is doing, but it certainly helps. I have also been watching the results on a chocolate tang I have in a copper treated QT. He is doing very well and eats really good. His fins were covered!!!
Again, not suggesting a cure, but wether it helps reduce stress, or calms/relaxes the fish, builds appetite or immune system, who knows, but for $1.39 and an extra 10 min. at feeding time, I feel its worth spreading my good results from someone else's discovery. I will try to find the thread and post it so they can get credit.
I hope you have good luck as I did. :beer: