no. the nano doesnt come with a skimmer. the only one that comes with a skimmer is the 28g nano hqi. i think the 29g is better. more space and better lights! and i think he did. and you dont really need a skimmer. as long as you do the proper water changes your good
I dont think the frogfish will touch hermits and snails, maybe shrimp and non-shelled crabs. Many need live food but you should be able to wean it onto frozen, hopefully.