Here is a conversation with Sun Pulse about their MH bulbs that a buddy was raving about, I decided to ask a few questions as I am still trying to learn about different peoples ideal spectrums. This is what I got:
Great info and they look like great bulbs! Do you have
the spectrum graphs for each bulb so I can make a choice on which ones
to buy based on this rather than the temp?
Thanks in advance,
Hello,
There is a spectral graph comparison in the Tech Info section in the
SunPulse vs. HPS white paper there.
Basically, the graphs you are used to seeing are done in laboratories by
the lamp companies with very specialized equipment. Growers don't have
any of the same equipment. The spectral graph you get is created by your
lamp, your ballast and your fixture. Change any one thing, and you
change it all. Dim an electronic ballast and the spectrum changes again.
Plants just want the Sun and our lamps are made for living things. The
color temperature is just a marketing tool to help growers know which
lamp to buy. If you just want one all around light for all phases of
growth, I'd get the 4k. Having a compatible ballast for our lamps is
important too.
Let me know if you have any other questions.
Regards,
Dan
SunPulse Lamps
On 12/1/2011 11:29 PM,
Each of your bulbs with different temperature have a different
spectrum, correct? I know the NM graphs are not entirely accurate due
to the reasons you state but feel it is a good start or ballpark. I run
other lights and want to combine your bulbs and don't want too much
overlap for different stages of growth.
Thanks,
Subject: Contact Form.
Date: Sun, Dec 4, 2011 10:17 am
Hello,
Since the NM graphs aren't an accurate way to measure light for the
growers, I just won't provide them. BS is BS, and NM graphs are BS.
If you "mix" our lamps with other lamps in your garden, expect "mixed"
results. Uniformity of light gives you better uniformity in the garden.
I expect you'll have plants at very different heights, with very
different results from zone to zone.
Let me know if you have any other questions.
Regards,
Dan
SunPulse Lamps
On 12/4/2011 4:13 PM,
Ok, what would be an accurate way to measure the light coming off of a
bulb? I am trying to educate myself about lights and the answer that
it is BS does not help me much...
Date: Thu, Dec 1, 2011 9:27 pm
The light coming off the lamp, intensity that reaches the leaf is one
element. The color of the light, or spectrum, is another.
Footcandles are a good way to measure light intensity. At around 5500FC,
in nature, photosynthesis stops. Watts per meter squared is also a good
reference for measuring incident energy at the leaf. Footcandles are a
little more practical for hobbyists.
We are the only lamp company that makes lighting for living things. All
other lamp companies make light for the human eye. We're plant people
who make lighting for plants.
Our recommendations for which color lamp to buy are on the side of every
lamp box.
Let me know if you have any other questions.
Regards,
Dan
SunPulse Lamps> >