Originally Posted by Harndog
I relize that normally this would not be enough light but the tank is only 12" tall with 2 inch sand bed and the light right on top.
I still do not believe it is enoug lights, and I speak from experience.
An RBTA, a rock-dwelling anemone, will not crawl deeper if it's not getting enough light, so in this case the depth does not have much effect.