KWhite

A few questions.

Hempgirl, would it be possible to cut a hole in the top of your grow cabinet, and mount the light into it? It seems to me this would allow ambient airflow to a large portion of the heat producing surface. Once youhave just the light producing portionof your bulb/bulbs alone in the cabinet, either seal the edges with a silicone or perhaps heat resistant tape?

Would also provide you with a little extra room for upward growth.
If you have already done this, ignore me.

Is it perhaps viable, to make ribbing, of foil or thin sheets of heat conductive metal for the backs of these lights?
Ribbing spaced approximately 1/4-1/2 inch apart and affixed should help cool these down a bit, although doing nothing about light produced from the bulb itself.

If this is a veg chamber only, and light leakage is not a concern, some small holes drilled in the walls or floor might help to keep temps lower, if it is to be a flowering chamber, sorry.

Kelly

__________________
"Your mind is your own, your body as well, from the soul we need not speak, tend it well, making those decisions you deem worthy, aware all responsibility is in your hands when the smoke clears" Kelly L. White