An inexpensive Refugium Bulb

For over a year, I'd been using a small spiral compact fluorescent bulb that only cost $7, with an output that was 75w of 6500K lighting. Under this 'daylight' color, my macro algae grew steadily. While shopping at Home Depot, I came across a new sealed-floodlight bulb that caught my interest. This new bulb costs $10, and also uses 19w. The one thing the package didn't mention was what Kelvin (color temperature) the bulb was. Please read this entire article, as a better bulb became apparent during 2005.