Depends on how far back you're asking. Marijuana wasn't illegal until 1937 and electric lighting has been around longer than that.Maybe one of you more educated people could help me out here...but how was indoor growing done before you could get all this fancy lighting equipment?
Depends on how far back you're asking. Marijuana wasn't illegal until 1937 and electric lighting has been around longer than that.
No, I mean the T8's that were introduced in '81.You mean T12's don't you? LOL
REALLY?? I did not realize that!! My bad!!!
My mind was back in the 70's growing. I think in the 80's HID's were being used. Could be wrong tho...
T-12's were in common usage in the 30's, the t8's came along in '81, and now the new thing is t5's.
http://www.ehow.com/about_6464110_t5_-t8-t12-lighting_.html