Wow, guys, don't make it personal. This was and still is a ginger topic. I think
vitz needs to calm down, no need to get high blood pressure over this, and
The sculpin accept that what you are doing with RO stream is like ****ing against the wind.
For any parasite to react to FW dips, the fish has to be in FW for more than a few seconds, until everything mixes FW+SW. Maybe this method worked because you lowered the salinity, adding FW, not because you gentle wash them with freshwater.
I have a ich problem with my tang. QT is out of the question for me (we are expecting) and my wife is giving me S%@# already for spending too much time with the tank.
The blue tang is the only one affected, and I have it for over a month. For me treating with ginger for 2 weeks, didn't work. Ginger is a hoax. Now I am working on food. I already started feeding it good food (rich in protein, vitamins) and I added metronidazole to prevent infections. I am trying to increase the fish immune system.
I added the tang to my system on Sept 20th, and nothing died since, of ich of course. In the last few days since I stopped garlic and ginger, and concentrated on tang target feeding with only metro, the looks clean.
My tank has strong water currents and a good filtering system. Tank has designed for SPS. This might be another reason the white spots on the fish were diminishing day by day, and a cleaner shrimp with big balls (lucky me).
I will continue this journey and keep you posted.
PS:
vitz there is no need to be so rude. I respect your experience (you could be like my father, even like my grandfather), but there is no need to make such "smart mouth" remarks. I know you want the world to recognize your knowledge and experience, and you are right 50% of the hobbyists have no idea about marine chemistry, but to say that no one born after 1970 can take 10 minutes to do proper searching, is too much.
You mustn't forget, we invented the internet you are searching on, while generation 60's-70's was celebrating Woodstock.