Hygger 30w reef light settings

[bubba005]

I upgraded my Fluval evo 5 from the stock light to the Hygger 30w reef LED a few weeks ago. While most of my corals are looking much better (chalice, candy cane, mushrooms, favia, button Scolymia), my acans in particular have remained shrunken in rather than puffy. I was running the light on setting 4/5 (roughly 70%) before reducing it to 3/5 (roughly 50%). Is it probably that this issue is caused by an excessive amount of light? I am planning on reducing the light’s power to 2/5 (35%) while moving it down to be about 6 inches above the surface of the tank. Any advice for how to resolve this issue would be greatly appreciated, especially from those familiar with this light.

 

[Tahoe61]

Did you see positive results from reduction in intensity? How deep is the tank?
It's odd that the other LPS responded positively and the Acan/Micromussa did not.