Heat lamps emit primarily infrared (IR), not UV. Incandescent lamps emit very little UV, unless the glass is specially treated to convert some of the visible light output to UV, as in blacklight bulbs.
Beeblebrox.420 Reviewed by Beeblebrox.420 on . 100 watts heating bulb is a 100 watt heat bulb, that gives UV rays good enough for the first 2 weeks of growing? i bought the bulb where i bought at a local pet store for reptile heating. im deciding to purchase more of the same, for the weeks following Rating: 5