Have never seen halogens recommended for growing - quite the opposite.

The "grow light" I ran across is 500W halogen, 10,500 lumens. Purported to grow stronger seedlings.

mrsmudge

You might want to post the location of the webpage adertising this. Halogens are generally considered poor light sources for growing. I'd be interested in taking a look at it though.

Sam

Ditto, assuming as I do that you mean quart halogen? The spectrum of quartz halogen lamps is terrible for plant growth. It'd be OK if you're just trying to manipulate photoperiod but that's about it. The fixtures are cheap enough, but it'd basically be a waste of electricity. And spectrum aside, that lumen rating is pretty pathetic for 500W of power consumption, to boot!

I found this on ebay. My suspicion is that someone was trying to find a new and better way to pull a fast one. I just wanted to check with the experts, though.

Lin

Yup. As is so often the case on Ebay, it's not so much "Buyer, beware" as "Buyer, duck and cover." LOL

Yea, I've seen halogen security lights being sold as grow lights on eBay.. cheap but useless. The spectrum's not that bad really, it's just the very bad efficiency (worst of any artificial light) and high heat output that makes them unusable.