Grow light hanging height

[Aquavaj]

I have a Kessil grow light that I plan to use once I have a refugium going in my sump. Do I need to hang it as low as possible to not inhibit to much algae growth? The sump is clear acrylic too so it's going to be difficult to limit the amount of light spill.

 

[tzabor10]

Yes, that would work.