Garlic kills invertebrates?

[mitchelljared]

So I've been soaking my fish's food in garlic and other additives for a while now, but have started noticing other "coincidences" that maybe someone can shed light on. So I use about a mL or two or garlic in with the food, let it soak for an hour or so, then wash it all out with freshwater, over and over till it barely smells of garlic. Then I use that food. We have had a peppermint shrimp and a cleaner shrimp both appear fine one minute, then about 10 mins after the feeding...they ended up dead. Maybe it's coincidence, and maybe they get a good whiff of the garlic and croak. Also some of the corals (bubble, xenia, etc) retract after the feeding, but always recover. Normal?
Thanks in advance.