Head on down to your local grocery or hardware store and pick up a compact
fluorescent bulb. At home depot, I saw a 25 watt fluorescent that screwed
into a standard incandescent bulb socket. There may be others. If your
existing tank hood has adequate clearance, this would seem a simple lamp
upgrade really, really cheap. On the other hand, you could go to
http://www.ahsupply.com and buy one of their kits.

I still haven't seen any information about the spectrum of these compact
flourescent lights. Does anyone have any evidence that they provide the
necessary wavelengths for optimal plant growth?
-Cesium


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