What's going on with these zoas?

[JonoB]

These were some of the first corals I put in my tank. I recently changed from MH lights to some AI primes, although they were fine for a while under those. They still open every day, but the maroon zoas have started to get white spots on them and are turning a lighter color. Is this bleaching, or something else that is going on? The other zoas around them are perfectly fine.

 

[JonoB]

Also should have pointed out all my parameters have been extremely stable and are at good levels. I'll test later today after work and post up exact readings.

 

[starypotter]

No idea, I'm sticking around for the answer.

 

[DSC reef]

Looks like a different type of zoa. I'm going with spectrum/intensity change is causing the zoa to morph another color.

 

[JonoB]

Yeah it's definitely a different type. And that would make sense. Should I try to move them, or just let them "morph"? When I bought the frag, I was buying the other ones, the maroon zoas just happened to be on there. I like the look of them though.

 

[DSC reef]

I'd let them grow personally.