Glove polyp becoming shorter !

Hi everyone i've had this coral for more than half a year now, it has 3 times more polyps than when i first got it. Recently i see that the polyps are getting shorter and the '' flowers '' seem to be getting smaller the only changes made is the intensity of the 250w metal halides, i recently removed some glass plates that were blocking the lights. Could it be light acclimating or there's some pests involved? :-/


picture taken lights off

 

bump , help please?

 

give em time to adjust to the new lighting.