Fan caught my fingertip.
That's gonna leave a mark!



Had a plan to draw air up from the light using reflectix to route the air.
Put a shroud around the 'sink to draw the air in from the sides and up past the power supplies.

Looked great, on paper.
My tempgun said 97 F.
My finger said, "That tempgun is lying to ya!"

"In theory, theory and practice are the same thing.
In practice, they are not!" <sigh>

Tore it all apart and started over.
Now have the fan about an inch above the 'sink with the air blowing down.

[attachment=o216428]

[attachment=o216429]

Much mo' betta;
About 90 degrees F. after one hour.
It's a 30V. fan running on 12.5V.
Not silent, but quiet enough for a bedroom.
Leds are pulling 14.5 Amps.
About 150 Watts is the total led draw.
I'll know the total power used in 24 hours or so.
Now I'll let it cook for a few days and then re-test for current draw.

Luxmeter says 90k at 2 inches.
So, without lenses, I should get about 22k Lux at 4"

Plants stop growing under 90k of white light.
I'll be testing to see how much red/blue is "too much".
These light meters are calibrated for visible light though.

So, all that these readings are good for, is a relative comparison between 2 similar arrays.
Once this array is in service I'll compare readings with my 5 Watt led arrays.

More pics later.

Weezard