Sick fish....QT tanks and the headaches... how do you cope?

[Hustler]

So.... fresh into saltwater i have everything up and running and all my tests are good...
all of a sudden i see my powder blue covered in slime... so im googling like crazy and have about 50 diffrent causes and i go check on em.... Dead.
next day i see both my clowns covered in it... So i buy a QT tank.... Didnt want one... never needed one in 20 years of keeping freshies but i did it...
Lost 1 clown a day after the move but the other is doing great...
I chaulk this up to brooklinella?
All my other fish in the display seem fine and everyone eats like pigs but from what i read stress is the kicker... How do you avoid stress when adding new fish?
Ill try the FW dip from now on but i guess it dosent work with the clownfish desies anyways....
Ive been following the "do you QT" poll and really i agree a health new fish should be fine to toss right in but at the same time.... marine fish are little A holes that are insistent on causing whatever trouble they can....
In fresh you could raise the temp... add some salt and cure just about anything....
Is there any tricks i dont know i can use for my display that will help this out....
Im feeding garlic with my food just cus i believe its a wonder cure for myself so it must work for fish