fosterfish, Heres what we do, We buy garlic from the grocery store pre-chopped, poor some of the juice from it into a little dish and put the food you feed to soak in it, let set about 10 minutes and then feed it to the fish. It works , we've never really had any luck with anything else. It is reef safe. Just don't use it for more than 4 days in a row, we have done this once and it caused our tank to cloud up. Hope this helps...Lisa