I have this stand/greenhouse.
http://www.homedepot.com/p/Flo...
My tender semp collection fills most of it's capacity. I plan on keeping it under the house eves this fall/winter to keep it dry. I'm looking at 24" 2 t5 65k bulb fixtures.
https://www.amazon.com/dp/B015TL6RH4/
My plan is 4 fixtures, one at each level. What I'm not sure about is the heat output. It's possible to see temps in the teens in late winter. Input on this hair brain scheme.