Mine is a Sylvania GroLux. There's not a lot of info on the box:Quote:
Originally Posted by Jerry Garcia 2007
GroLux 400W
HIGH PRESSURE SODIUM
Made in Belgium
Code 0020807
E40
bar code: 5 41 0288 208077
The bulb is advertised by Sylvania as being the only bulb designed specifically for growing. It is a full spectrum bulb. Dual spectrum doesn't really make much sense, I think Wheatie might have got terms confused because I'm pretty sure we are talking about the same bulb.
PC :smokin: