Naked Science Forum

Life Sciences => Plant Sciences, Zoology & Evolution => Topic started by: CliffordK on 17/02/2013 01:49:29

Title: What is a grow lamp?
Post by: CliffordK on 17/02/2013 01:49:29
The other day when I was shopping, I decided to get a couple of grow lamps.

They come in both incandescent, and fluorescent, and cost several times as much as an "ordinary" bulb.

The only thing that I can see is a blue paint.  Plants don't effectively absorb green, so perhaps that is related.  They also grow slower with UV, so are the lamps UV shielded?

Anything else?

Or...  are they just a fancy bulb that manufacturers can charge exorbitant prices for.
Title: Re: What is a grow lamp?
Post by: evan_au on 17/02/2013 10:25:30
Sometimes a house burns down because it has been filled with high-intensity lamps for growing marijuana in hydroponics.

The electrical fires are often due to trying to bypass the electricity meter for the very high currents drawn by these lamps.
Title: Re: What is a grow lamp?
Post by: CliffordK on 17/02/2013 10:48:54
Ahh....  yeah...
I am good at growing weeds.
But, I don't need to grow weed.
If I wanted to do that, I could simply move 100 miles North to the other side of the "river".

I found a Wikipedia page on Grow Lamps (http://en.wikipedia.org/wiki/Grow_light).  However, it doesn't really show a good comparison for effectiveness of the different grow lamps.

My goal was actually to get a little heat for starting seeds and plants, so I've chosen the incandescent bulbs for the time being.  Heat + a little light.
Title: Re: What is a grow lamp?
Post by: RD on 17/02/2013 10:58:56
Apparently the spectrum output from the lamp can encourage/discourage the plant to flower.