I assume that your outbreak was many weeks ago so that the new fish don't just get sick when you put them into your tank.
I would suggest if you ever purchase a Dragonet that you try to teach it to eat prepared foods like brine and mysis enriched with vitamins. I purchased a Dragonet locally at Oceans and placed it in a breeder net within my tank for 3-4 weeks during which time. I used a feeding tube twice a day or more to offer at first brine shrimp and then slowly mysis. Once the Dragonet was eating regularly I let him into the dt and the proceeded to feed him with the same tube everyday.
He now has learned to take even more of the frozen food I feed to the display and hunts the tube when it goes into the tank. I do leave a large pile of food in front of him because they are slow eaters and other fish and crabs may try to steal it from him.
You can also make a feeding den for the Dragonet to help with this. I don't have much trouble with this as I only have one clown fish, tail spot blenny, and some hermits that will steal from him.
When I purchased him his sides were caved in a little and he was starving but now he has fattened up a lot and bulges at the sides more. I is definitely a good idea to have a fuge with pods as some will make it into the display and you can shake some out into the display as well when you do maintenance but if you can train you Dragonet to eat prepared food it would go a long way. It is not a guarantee that every Dragonet will take to training and an Ora Dragonet would probably be best but it is possible.
not sure if you have read this article:
http://coralmagazine.coverleaf.com/coral/20111112#pg51
and also here is a link for a few ways to train Dragonets:
http://www.nano-reef.com/forums/inde...&#entry3360190