That is interesting because I have a 3-4 month old coral 40 gallon tank and the yellow polyps are disappearing like candy. The only things in the tank are a cleaner shrimp, a hitch hiker crab (very small and white that stays that the bottom) and an algae blenny. I can't figure it out.
From what I have read you have to have live Rotifers to feed them. I have only just begun as well. Starting with an already established pair is the way to go. I only got a 55 gal. tank 2 weeks ago and the breeding pair already hatched some eggs. I am trying to move the anemone into a higher spot...