I have had no problems shipping SPS before, I have done it many times. You can see my last shipment from last week, I did not float the bags due to the number of them, I did however check temperature and salinity. I added small amounts of water over a period of an hour just to be careful, but the temperature between the bags and my tank was only 4°, and the salinity was pretty well the same. Sorry to hear about your loss. No matter what the reason, it still is depressing when you loose a new aquisition.
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