Acan coral placement

Hello all,

I bought two plugs of Acans last night, each with 5 heads. They are very pretty.

Today one seems to have receded a little. It was in the middle of the tank on a rock. The other has receded a tiny bit. It was on a rock on the sand.

I have a 94 gallon corner bow front. I think it’s about 24-30” deep. My lighting is a 36” LED strip with 72 white and 72 actinic.

Is there a recommendation on placement for these? The LFS said they were thriving and even eating pellet food.

Water parameters good. Nitrate always hovers around 10 though.

Thanks