What size is your tank? How old is your tank? How much LR is in your tank?
I'm my opinion there is NO such thing as pods being out of control. As for adding a pair of Dragonets, those pods will disappear within a months time, if not sooner.
What are your plans for keeping up the Copepod population? The most vital food source of the Dragonet! Have these Dragonets been trained on prepared foods? As a form of supplementing ONLY. What other fish do you have that may compete with the Dragonet for food?
No matter the type of Dragonet it is. It is still a Dragonet and has very special food requirements as it does NOT possess a stomach like other fish. The food does NOT sit in a stomach waiting to be processed. This is why a Dragonet no matter the type will spend up to 16hrs a day eating! They do NOT eat all types of pods either. They do not eat Amphipods, which are nocturnal and make up the majority of pods in most tanks.
Dragonets sleep when lights are out. Usually by burying themselves within the SB.
A Dragonet CANNOT survive long term on prepared foods alone. Especially Blood Worms, a very unnatural fresh water food.
I'm speaking from experience here. Having lost 3 to my own ignorance, desire and thinking that I'm different. Poor fishes paid for it too