more pod = more food and they help keep the trates in the sb down so yea they will be good for your fish, also your coral will eat free floating pods as well. Imo they are a good addition to dts. Im not familar with macro, unless it is a small shrimp. A fuge over time will have alot of small copod sized critters. all help to create a more accurate tank (accurate in relation to a reef). I would highly recomend a fuge