Waving hands, is that anthelia or xenia? Eh, both are hardy and you don't need to worry about them. Same with *most* zoas. I've seen my zoas close up on food bits, but you don't have to worry about them either. When I was trying to encourage growth I sprayed them with tiny micron sized food - careful not to use to much force or they close up in defense, not feeding. Acans will catch food on their own, but may benefit from target feeding depending on how your fish behave and how much you feed. (Fish and shrimp like to steal from slow eating LPS.) They'll be more likely to feed naturally at night, but you can 'train' them on daytime feeding too. Candy Canes will benefit from target feeding, they sometimes have a slower feeding response. The torch will spread those tentacles to grab what it needs, so I've never had to target feed. I assume the frogspawn should be the same. If you broadcast feed enough food to send hermit crabs scattering, you shouldn't need to target feed.