It might not be happy under that, I don't know.
I am no expert, but with my setup even with the anemone parked on a rock structure 6 inches from the surface directly under a 250W 10,000K HQI MH it would move around if I turned my 2x54W T5 actinics on durring the day. The avitar picture is actually of it doing the wandering. It would creep slightly down the rock like that and circle the rock presumably trying to find a surface that it could climb higher on.
My totally unscientific conjecture is that the anemone tells how deep in the ocean it is by the blueness of the light. It wouldn't use the intensity otherwise it would be wandering around every cloudy day.
Anyway, if I left the actinics off, it would not move.