Thanks green, glad we agree on this one, I had this argument with roseman, who told me to go grab my cfl in my hand, and hold it tightly.....which I did, and I cursed him...it burned my hand!
Quote:
Originally Posted by green_nobody  i would be bit careful, a damn good CFL gets about 100 lum/W but a HPS gets 150 lum/W (as long it is bigger then 399W  ) and a 400W can be use at less the 4" if aircooled and only a ft if un-cooled. you can't beat that with a 100lum/W CFL 2" away from the plant - there aren't enough lumen lost on that way and HPS wins.
and that CFLs are totally cold is a myst as well, the get so hot you can burn yourself touching one. and so they can burn, and will so, leafs too. |