Well I picked up two sea urchins and yellow tang last night. There was a beautiful powder blue but I was afraid to spent $80 and have it die. I don't know why I have such trouble with anything other than small fish. I have 7 other small fish that range from 2.5 to 8 months in my tank with no problems but any time I add a larger fish it only lasts a few months. My water q is great with 0 nitrate and very low phosphates. I keep my Ph in the safe range and typically @ 8.3 What am I doing wrong? I do believe I killed a few with ammonia burn due to living 1.5 hours to the closest LFS. My understanding is after floating the bag for minutes it's best to cut and dump rather that a slow acclimation witch turns fish urine to ammonia and burning there lungs.