Caribbean Disk Anemones/Mushrooms ( Discosoma )

These mushrooms have been in my tank for some time now. Although they have not spread unlike some of my other mushrooms, they have enlarged in size. The largest mushroom on the right expands to about five inches in diameter when fully out. They are not positioned in much current but receive a good amount of light. Although this picture does not show it, these mushrooms do flouress more green under the actinic light.