The Mad Hatter wrote:I got the shop lights from Menards for ten bucks and change. I also got a case (10) of bulbs for 23 I think is what they were.
They are 6500k T-12 lights. So far they are working great with my new heat table.
Same here. Look for shoplights that accomodate both T12 and T8. T8 are newer technology. are a smaller diameter, and use less power for the same amount of light. Slightly more expensive, but it works out in a short while. The model in the photo is American Flourescent 234SLESW. Cost about $14 each, but go on sale once every couple months with a $5 manufacturers coupon.
Here is my system for both growing hydroponic lettuce indoors and for starts in the springs. The starts have done very well. This is simply 3 of the 48" shoplights I mentioned above fashioned together with tent poles and zip ties to create one wide light system. This will accomodate 4 1020 tray sideways or 288 starts / or 72 up-potted starts.
I have also posted about lighting expenses in my blog that goes into the "spectrum" question you had as well as actual operating expense breakdown for the light cycle. You may find it helpful.