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Re: Cheap HID's

> Date: Sat, 21 Dec 2002 12:59:59 -0500 (EST)
> From: Richard J. Sexton
> ...I still maintain the on-the-cheap way is to get a
> sodium or mercury outdoor "safety" light and use a
> 5 gal coffee can cut in half as a refelctor.
> They're about $50 US up here for 75W Na and
> 150W Hg.

And I've always thought of the _combination_ of the two as the least
expensive, most "powerful" "GroLux" available. The MVs tend to peak out the
phototropic curve while the HPSs usually fall within 50 nms or so of most
plants' photosynthetic response curves. And the MVs also throw enough of the
greens to really kick off red plants without much need for things like
"phosphate pulsing"...


David A. Youngker
nestor10 at mindspring_com