Well,most of your pods are generally herbivores/detrivores.I feed my corals mysis shrimp and very fine particulate foods like Golden Pearls(50micron) as well as pureed fresh seafood.By importing foods/nutrients into the system,they are eaten by the higher(corals/fish) life forms and the waste products they release are eaten by the lesser lifeforms(iworms,inverts,etc..).The end result is organic PO4 and NO3 which algae use as a food source.This turf algae will be grazed on by herbivorous pods,snails,etc.
The most important thing you should consider for a mandarin tank besides feeding is to not introduce a species of fish that are also "pod predators"
IMO,Clownfish make perfect tankmates for mandarins.
BTW,I also waited 4 months before introducing my clownfish into my 75.You are definately taking the right approach to having a healthy reef tank.