Today I set up a light in the indoor chicken pasture to simulate a longer day length for the purpose of egg gathering. I perused the hardware store for an appropriate bulb and bought one of those new fluorescent bulbs desigend for the outdoors. It looks like a flood light bulb except the curlycue bulb is just inside the outer glass bulb. I had reservations about it. The package promised it used the energy of 23 watts but would provide 90 watts of glow. Yep, I was skeptical. It is one very cold climate I live in and the last couple of days have been horrid. I set up an over head lamp fixture which is an unused brooder base. Attached a timer and plugged it in. It glowed and quickly became brighter. The chickens got a glint in their eye too. The Muscovies trundled into the indoor pasture (a TSC Garage in a Box) and sat down and preened. Hmmm. So it did appear to be plenty bright enough, I hope it does save me some on the electric bill! Anyone else using these items?