So last year after killing off the first set of seeds, I made a seed starting box, with lights, air flow, and heat (from the lights). The plants thrived.
Here is how its made...
Step 1: Materials
3 temporary bulb holders (home depot rubber coated) UPC # 0 78477 83939 1
3 CFL 13w light bulbs (do not use other types the heat would create a dangerous situation)
2 wire nuts
1 cord end (I got this one off a dead microwave) a short extension cord work well also
3 band ties
double sided tape
piece of bubble wrap the size of the bottom of the container
hole saw (the size of the bulb holders) 1 1/2"
Step 2: Drill Light Holder Holes
A few words of caution:
If you are not comfortable with electrical wiring, please consult an electrician. You use this instructable at your own risk. Wiring lights is not difficult however if done wrong can be dangerous. Using standard incandescent / or halogen light bulbs will over heat the starter and could be dangerous
Chuck in your hole saw (1 1/2") in the drill and drill 3 holes in the lid of the bin. The holes have to be close enough together that the wire ends of the sockets touch with enough slack to connect the cord.
Step 3: Install the Lights and Wire
(Legal notice : IF you take on this project you do so at your own risk. Exposed wire can cause injury. IF you are not comfortable with electrical wiring please consult an electrician. Do not put tension on the electrical cord as wire nuts are not designed to take a strain load)
(Photo 3) Wire, use red wire nuts to wire all the white together, then wire all the black together. Since the holders don't have a ground it will just hang free.
Wrapping these connections with electrical tape will give a bit of added protection if a nut comes loose or a wire is exposed.
Step 4: Wiring Explained
There are notes on each picture.
Cut off the female end of the cord.
Strip back the insulation 6". This will reveal 3 wires (assuming you used a cord with a ground) black, white, and green.
Strip back 1" of insulation from the black and white wires for the cord.
Strip back 1" of insulation from the temporary bulb holder black and white wires.
Twist all the black together.
Twist all the white together.
Trim back the copper wire to 1/2 to 3/4".
Twist on a wire nut clockwise to each set of wire.
Step 5: Line the Bin
Keep the foil in place by using double sided tape between the foil and the bin.
Cut a piece of bubble wrap the size of the bottom and place bumpy side up. This will provide a drain if you over water and insulate against a cold floor.
Step 6: Punch 4 Vent Holes in the Bin
Use the same hole saw used on the lid for the lights, leave the reflective material in place and cut slits up either side to create a flap. You can close the flap if you want more or less airflow.
Step 7: Add Light Bulbs and Pots
I close the lid until the plant got around 2 inches tall. Keep an eye on the moisture. They need to stay damp when sprouting, If they are too wet when growing they may form mold. Use starter soil and clean all your pots from last year.
This project should be plugged into a GFI protected circuit.
Enjoy your garden, and good luck.