Mh lighting question?

[Zandor]

Zandor: That isn't at all what I am talking about. What you have there is a lumen rating chart (you know that) unfortunately lumens are based on total light output, not useable light. The lumen is also not expressing the quality of the light (color temperature.) It only shows how bright the bulb is to the human eye. Lumens are pointless when talking about plants as they are only telling us how bright the bulb will be to us, not the plants. Thus more lumens does not nessessarily equal better light. It seems to me that with a higher lumen you are just wasting more energy as it takes (I'm pulling these numbers out of my head so they not be right on) around 40-60% of the wattage to get the bulb to the correct temperature for light emittance and than only about 10-25% of the remaining wattage is producing light of a spectrum that the plants will use for photosynthesis. That means roughly, that with 1kw of energy (for a 1000w HID) the plant is only using about 100w of light for growth. (remember, those figures are probably off but near to the truth.) Also it is the brightest part of the light emitted from the bulb that is giving it the lumen rating and plants prefer red and blue which are not that bright to our eyes.


FERMENT, you'll like it.

Dude that was not even close to what you asked.

You said "Know anything about using MH bulbs in HPS ballasts. Will the igniter mess with the MH?" that I answered. This is a different topic and I would be happy to have a discussion with you about this but it should be in a new thread don't you think or do you want to keep it here?

[FERMENTATION]

Zandor you need to double check that quote source. It wasn't me who asked that one.

[Garden Knowm]

GK: Have you seen a full grow done under an EYE Hortilux blue? Thank you for sharing your firsthand experience.

I dont KNOW...

i have seen many grows... many..
i have never seen a 400 watt bulb do what a 600watt bulb can do...
if used properly in pairs, 600watt bulbs are the most effective use of energy i have seen.

i have never seen a MH bulb do what an HPS can do.

i love you

I MAY BE wrong...

NO, I take that back...

[Garden Knowm]

http://www.specialty-lights.com/901791.html

http://www.sgs-hydroponic.com/produc...ls.php?id=2131

http://www.truevisionhydroponics.com...p/tvhb1670.htm


this bulb....

i would like to see it...
can i come over?

[karmaxul]

Damn never seen that bulb before. Its like a mini hps with a MH insides.
Definatly the most expensive bulb I have ever seen. I wonder how it is on insulation being so small. If its got thick glass it probably rocks. For that price though I would hope it signs to the plants.

You can but you need to know how to rewire the ballast to take the HPS igniter out of the circuit. all it takes is one slide switch and you can run MH bulbs and HPS bulbs.

Mh use transformer to cap to socket and HPS use transformer to cap to ignator to socket.

Get it?

But you can't go from Mh to HPS by adding an ignator. most MH transformers have one less wire to power the ignator. It takes 2 different voltages to light up and run the HPS bulbs.

Thanks Zandor great info