http://durgan.org/2016/December%202016/29%20December%202016%20Seedling%20Light%20System/HTML/ 29 December 2016 Seedling Light System
Natural window sunlight is used for most of my indoor growing. Often this is insufficient depending upon the weather. I put together a simple system from purchased parts from Home Depot. A 23 Watt Compact Fluorescent Bulb daylight spectrum was used, a simple reflector, and a 23 liter plastic pail. The heat produced is minor and may be ignored. The lamp fixture was $20.00 complete. The Compact Fluorescent daylight spectrum bulbs were $20.00 for four. The pails was $3.00. I will add a small fan when one if found to move the air in the pail.
https://www.amazon.com/gp/product/B005P29K1S/ref=od_aui_detailpages00?ie=UTF8&psc=1 Hydroponic Full Spectrum CFL Grow Light Bulb 60 Watt Bulb 5500K H60