How's everybody doing?

Has anyone here had problems keeping plates? I have everything in my personal tank at home, hard, soft, anemones, etc. For some reason I cannot keep plate corals alive, I've lost a short tentacled and two long tentacled in the last 2 months. I have put each one in different spots, on the sand. they look great for about 2 weeks, then start shrinking up and dying.

Any tips out there?

Thanks,
MIKE