Good or Bad for Crocea?

[Kaiser Tang]

I have a 4" Crocea. When I first got him two weeks ago, he would fully extend his mantle. I have since added a little more light. (225 watts VHO). Now the edges of his mantle curl up a bit. Not all the way around, just in a few places. Is this good, bad, or neither. Any thoughts?

 

[mbbuna]

it's not good

 

[Electrobes]

It means he's stressed but I think he will be fine. The super bad thing that could happen is if it starts to bleach, which would be a big nono. Keep an eye on it and if you start seeing translucent spots I would lower the clam.
The clam should be fine, it is one the highest light needy clams in the Tridacna family, and VHO shouldn't cause it all that much stress, even if it had been under those lights for a while.