Not any more. When I used to do, I felt I ended up stressing the fush more and at least in my case it was not a guarantee the fish will not get sick after the quarantine. The point i was trying to make is that I will treat any fish as quarantine. Just like i treat any coral as need dipping regardless if the system it came from..Do you qt your fish once you purchase them?
I feel from buissness stand point ita not worth it because fish can get sick anyway.