13.78”L x 13.78”W x 13.78”HOh yeah, vetteguy knows a ton. You might need to tweak the %s a bit if you notice bleaching or poor coloration, but you'll probably be in a good place with that.
What are the dimensions of the tank? 10gal cube? If it is a Noopsyche Mini hanging over it with the flex arm, you are probably going to hit >300 PAR on top of rocks in the tank and 150-200 on the sand bed. It is a strong light. That'll be good for basic SPS and hardy acros, maybe need a bit more for the fancier stuff. A bit too much for some LPS and softies, so you'd dial down a tad.