I've had this one for 2 years. I checked and I ordered it from Blue Zoo Aquatics on 1/31/2012. Has been in 2 different tanks (upgraded.) I drip acclimated for 3 hours when switching it between tanks and when it came in. It has had some very short air exposure as well. I have never target fed it, but I feed heavily and skim heavily. My tanks have never been out of the 1.025 - 1.026 salinity range, so that probably helped. My live rock is not super-clean, either. There is plenty of red turf algae and stuff on the rocks. It moves around the whole tank all the time.