Zoa bleaching?

[Robba456]

I have a small colony of zoas that are turning almost pure white for about the first month and a half i had them they were a nice bright reddish color i got a new light and then about two weeks later they started turning white all my other zoas are doin awesome and the ones turning white are growing like crazy still they have multiplied several times in the last few weeks they are fully open and look great besides the turning white part. Im not sure what kind they are i was given them for free from a private seller i bought some other coral from. Anyone ever had this problem and know what to do i jave tried turning the light down for a couple weeks with no improvement. Thanks

 

[Benjammin]

Got any pictures?
Before and after maybe?

 

[Reefing_addiction]

Move them lower down
Pictures would help and placement in the tank