Nope they eat algea (sometimes) and scavange for leftovers other than that the pods are safe and will respond to the ammounts of food available for them they will seemingly come and go in cycles but will still not benough for most fish that require pods to eat and survive if that is the motive for the fuge if it is for nutrient export have at itamazing how hard it can be to keep everything in balance...not a dull moment. I want to add a small(3 gallon) rubbermaid refuge so i can get copeopods into the picture. Will hermits eat these?