GSP identify or help??

ya im going to stop the dosing, the mushrooms actually got really small before i started the iodine..they entered the tank at the size from the picture and after a month they had shrunk to where they are now, which was a month ago, i only started the iodine about 3 weeks ago. Im curious if the problem with the mushrooms was the cleaner shrimp i had that loved to hangout right in the middle of all of them, but he has been moved to my friend's tank now to see if that will help to bring them back.

I am also in the process of acclimating the tank to a new led light so will see if that helps them out at all, it may create a bit of a shaded area over where the mushrooms are.