plate coral looking bad off and on

[erky]

I have two plates that look bad most days, i have one other that is not pictured that looks great all the time, then there is a little baby that came off the blue one that is pictured that looks fine (its really small so not that visible) Anyways these two plates always seem to struggle and im getting concerned with the orange one. its mouth is gaped open recently and i do feed it often with pellets. The blue one was super sick looking a few weeks ago so i took it and placed it in my frag tank for easier access.

does anyone have any tips or ideas for me to try to help these two out?

 

[CuzzA]

Plate corals will grow large and then appear to die back, but this is their natural building process. After they appear to die, they will sprout new plates. They will continue to do this, stacking up like pancakes and then eventually they will fall off and start the process over. In other words, don't throw away plate corals. ;)