So I’ve been in the reef world for 15+ years and never had to quarantine a fish knock on wood. But recently my tomini tang I got from my lfs only one I’ve bought from for the past 9 years got ich. I now have been reading and have to quarantine all my fish in there luckily. It’s an open scape 90gallon and most of my fish will swim into the net without chasing them. But I’ve been reading about freshwater dips and copper and honestly it has me freaked out. What does a freshwater dip consist of. Just putting the fish in rodi water for 5 min. Or what. Sorry for the confusion and lack of knowledge on this and thank you in advance for all your help and advice!