1.5 cf, 50Watts!
Let the light bleaching begin.

Actually, you may be OK with 1 W., emitters.

That would not float with the bigger emitters.
[attachment=o238934]
This occurs at about 5".

And anything over about 91K. Lux, will halt growth.
This should be a very informative experiment.

Aloha,
Weezard