I picked up a 2 bulb 40W shop light fixture @ $10, and two GE plant and aquarium bulbs @ $10 ea. and set them 3" over the top of the seedling tray. It's on a timer set for 18 hours on and 6 off. I will hook it up to my kill-a-watt meter and see how much it cost to run a day vs the 400 W High Pressure Sodium light. Also, I can see lots of little white roots down in the growing medium, which means lots of seedlings soon!
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