MY LT white nem just kicked the bucket. it was a cheap Fl condy but I am wondering why it died. I have had 2 that have died. I have 520w lighting. Sump,protein skimmer. I fed it 3-4 days a week. Shrimp,brine,mysis. I added all the necessary additives. It was in my 75. Don't seem to have any luck, even with the supposed "hardy" ones. Can anyone give me any insight on what I am doing wrong or suggest another type of nem for my heartbroken clown?