Dr. Ott was the first to create natural sunlight in a bulb. (He’s our fonder. We’re pretty proud of him.) He was researching different wavelengths of light and the effect they have on pumpkin plants when… Eureeka! The output of a 20 watt OttLite Plant Growth bulb is roughly equivalent to that of a 75 watt incandescent bulb. Think of all that energy you’re not paying for! What will you do with that extra change? How about checking out the local gardening shop for some new seeds, bulbs, or plants?