I use additional light in the form of these light bulbs bought at Amazon
Agrobrite FLC26D 26-Watt Spiral Compact Fluorescent Grow Light Bulb (130W equivalent CFL), 6400K
in a
Woods Clamp Lamp Light with Aluminum Reflector, 150W, UL Listed, 6- Foot Cord
I have to check, I think some other, similar bulbs I use are 32 Watt.
They work quite well for me, just placed over the racks.
