Duncan Coral Stretched Out?!?

[sotsreef]

Not sure but my Duncan looks to be stretched out, or reaching up to the light. Is it not close enough to the top for light, or is this normal.

It has been like this since I got it a month ago. My tank specs are 8 gallon cube, kessil A80 tuna blue, 1.025 salinity, and been running for 6 months

 

[AdamNC]

Looks fine to me.

 

[GzO]

I was just thinking, is this how we can get Duncan's to avoid growing in ball formations. To keep them"branching"...