looks like one more thing to fear in the SPS, ACRO keeping world. seems theres a type of mite that can decimate certain acro colonys.as we all know mites are very hard to see and you would need a magnifying glass to look at them. There are a few types apparently with 1 being parasitic.It sucks to think now when buying corals that you have to bring in your magnifying glass to the store! there are experiments being done with HEARTWORM treatment for dogs to erradicate them when in your tank. seems succesful so far. A few OTTAWA reefers are having probs in this area and I sure hope they get past it. If any of you have info on this please post your findings no matter how depressing it may be.