So here's what I did.
I painted the interior of the box white.
Space is about 3'x18"x18" give or take
I bought these light fixtures from a charity store that recycles building materials. Cost between 50 cents- $1.
I put lights in the fixtures and figured out how to place them in the cabinet. ( Important to figure this out with the biggest of your bulbs!) Drilled holes, popped the threads through and nutted them in. I have the following lights inside: 4x42W (no idea what spectrum-- CAN'T find it written anywhere. Just said general purpose) 2 x 29W same make as the 42Ws. 2x27W-- Cool White light. Total Lummens=18,520 .
I wired blacks to blacks and white to whites and pigtailed them to the lamp cord. Cord gets plugged into a powerbar.
The "daylight" lights are a much different colour-- bluer-- than the "general purpose" I only had two of the daylight ones since they were lower Watt. and I find them hard to find. I plan to rotate the positions of plants so they get close exposure to both spectrums. I placed the lights pretty far apart with the possible intention of putting a third row in the center. The lights are fixed, I will raise and lower the shelf with the plants. Notice the shelf is just a piece of wood on upside down flower pots. I'll use random things to create the heights as I go.
I wonder about what happens if the lights touch each other or the sides of the cabinet. It was a tight fix lenghtwise-- I think I managed to avoid actual contact.
It gets hot in there if the doors are closed (over 100) there is a hole in the top of the cabinet that I covered because of light loss, but I may be able to use it to vent iwth a computer fan (If I can figure out where to get one and how to wire it.) ... So for now I will keep the doors ajar, the fan in front and keep and eye on the temps. I can pop the clip on light infront and point it in if need be. Teh fan is just sitting on a rigged up shelf in front. Ummm... anything else I need to mention? Don't think so... It was a fair amount of work. Lots of running around shopping too. I plan to mylar the inside of the other two cabinets and use a bathroom vanity light to put in the multiple lights on a moveable shelf.
I bought everything I intend to need for quite a while. (except maybe more bulbs) The goal is that this little cabinet can be home for my eventual clones. The two larger cabinets will house my plants in flower. I'll set those up another day. I've likely spent about $200.
So... think this will work?
Oh, and yeah, I have 10 little seeds that germed, not yet poking their heads up. Didn't intend to start that many plant at once, so normally I will have fewer plants in these cabinets.
Thanks for reading.
GG.