Leptastrea damage

[Forty-Two]

Hi all - a couple of months ago I got a nice 24k gold leptastrea from a local seller.

At first it started to grow nicely and encrust in the rock but in the last week it’s started to show damage in the top.

I’m not sure what is causing this. At first I thought it might be my hermit crab - but it seems to be growing and not shrinking. It’s between two rocks so the flow is not strong in this location.

Maybe the lights are too bright? Does anyone have experience with this?

 

[Forty-Two]

Maybe this is a better photo

 

[RubyU235]

Maybe this is a better photo

I think you might have meant Leptoseris. That does not look like a Leptastrea