LED on a 30" width

[Aquattro]

Originally Posted by Gizmoh

What sort of clearance do these units need above the heat sink for airflow as I mentioned I only have about a foot and I think 8" is ideal above water level.

Mine are fitted into my canopy, which gives them about an inch of clearance. I have large holes in the top of the canopy that let heat out, although so far, there's no heat coming out.