currently feeding my fish with Henry's gourmet ( pellet form ) and they liked it,even my flame and flameback angle eating.never try the rest so not sure.
Just came back from chatuchak, not much variety ( fish ). just the normal usual type. prices oso quite high too. ask the price of 1 picasso pair and it cost 8000baht.
U can dose some bottled beneficial bacteria if u wan. Many brands around, just choose those meant for marine use. Personally I am using biolift. Not bad except the pungent ammonia smell.
My peppermint shrimp spawn in my refugium and I could see some very tiny creatures crawling on the LR. Didn't really paid attention to them, guess its all gone now.