Mystic favia gone orange

[kevensquint]

Hi as per title, anyone know why a green with red spot mystic favia would turn orange. It's growing fast and looks good. Just curious if it's an element or a spectrum that causes this

 

[Stigigemla]

I believe it has picked up another kind of symbiotic algae that is growing better in your tank.
The green color needs a little iron to develope so it could be lack of iron too.
If other corals have good green color it is not the iron.

 

[kevensquint]

I thought about iron too but my other green corals are very green. I dose a bit of iron and ICP too. Can't figure the reason. Looks nicer than the usual coloring actually. Maybe I can name it something ridiculous and make a fortune like everyone else in the last 10 years ;)

 

[Stigigemla]

It is not uncommon for coral to shift color.
I believe Euphyllias are the most common.
It can happen to corals that has been some years in the tank.