Yo may be best to use a hob refugium. either the pricey ones from cpr or a hob breeder box like I used on my 30g for several years with my first mandarin.
In the new tank, even with a fuge ,Last year i found an old dead birdsnest skeleton and used fishing line to make a "chato tree" for the mandys dragonets and pipes to feed from. Did that just for fun, worked pretty well.
I did have to trim the tree from time to time
And Welcome to Reef2reef!
IMO keep a diverse frozen food diet if hes eating it. Capellini roe, nutramar ova, mysis, baby brine. keep in ming even if hes not eating all of it, the pods are too, and benefiting from the nutrints.
From time to time Id sprinkle flake food and coral frenzy on the top of the chato in the hob to spur blooms and gut load the pods.
keep the hob clean.
If the tank is small (30) keep a close eye on the bugs and mandy, imo ime a mandy in a smaller tank needs to be species specific. That would be the mandy. IMO. as its the trickiest.