Mh lighting question?

FERMENT-Just felt it needed to be said. If you read all my posts and Zandors posts you will understand. For me to give you a 4200 post review would take to long to type. Its easier just to read. Try about 500 or so posts back I can not remember the exact origins.

I enjoy the light output of the MH better then the HPS aswell FERMENT

a few tips
when vegging dont let it get over half the hieght of ya plant or ya will run out of room when in flower mode
and try growing an indica strain as these are small bushy plants
cheers hope this helps :)

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Originally Posted by FERMENTATION

I wonder who that crap was directed at? Karmaxul, who exactly is that passive aggressive gorilla shit being slung at?

It seems to me we have a pretty free flow of knowledge here. Some say HPS some say MH each have their reasons. Have any of you more experienced cannaphiles done a side by side comparison of the best HPS and MH bulbs? Or, are you just stating an educated opinion?

The best MH's show plenty of red output on analysis. Am I wrong? As far as I can tell the best MH has better red output than any HPS. Although you can't tell by looking at it because there is so much more blue as well. In my opinion MH bulbs right now are showing better light output then HPS. If I am flat out wrong I welcome correction but I think I am going in the right direction here with my observation.

There is also the possibility that the bulb companies are full of shit. That is why I would really like to see if someone has done a comparision.


FERMENT.

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Is this what you want?

Standard H.P.S. Bulbs

High Pressure Sodium bulbs are red/orange in the spectrum. They are the best lamps available for indoor growing of flowering plants. This type of light promotes flowering/budding in plants. It is ideal for indoor greenhouses and commercial growing applications.


1000w HPS Bulb (140,000 Lumens)
600w HPS Bulb (92,000 Lumens)
430w HPS Bulb (53,000 Lumens)
400w HPS Bulb (50,000 Lumens)
250w HPS Bulb (28,500 Lumens)
150w HPS Bulb (16,000 Lumens)
100w HPS Bulb (9,500 Lumens)


Enhanced Spectrum H.P.S. Bulbs

Enhanced Spectrum High Pressure Sodium bulbs are color shifted to product more blue than a standard HPS bulb. This makes them great for "one bulb grows all" lighting. They have great red spectrum making them a good flowering bulb, and additional blue spectrum making them an effective vegetative growth bulb, keeping the stems from elongating which can happen with standard HPS bulbs during vegetative growth.


1000w HPS Hortilux Bulb (145,000 Lumens)
600w HPS Hortilux Bulb (85,000 Lumens)
600w HPS GroLux Bulb (90,000 Lumens)
600w HPS Plantastar Bulb (87,000 Lumens)
430w HPS Hortilux Bulb (58,000 Lumens)
400w HPS Hortilux Bulb (55,000 Lumens)
400w HPS GroLux Bulb (58,000 Lumens)
400w HPS Plantastar Bulb (55,000 Lumens)
270w HPS Super Agro Bulb (29,500 Lumens)
160w HPS Super Agro Bulb (17,500 Lumens)

So if you can only have one then it's HPS plus if you want a conversion bulb so you can run a MH. HPS to MH conversions are cheaper to buy then MH to HPS bulbs.

Dont know about him but I definatly was looking for numbers like that.

Know anything about using MH bulbs in HPS ballasts. Will the ignitor mess with the MH?

with those spec's... I'd go 1.000 watt..

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Originally Posted by karmaxul

Dont know about him but I definatly was looking for numbers like that.

Know anything about using MH bulbs in HPS ballasts. Will the igniter mess with the MH?

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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.

Experience...

I have never seen an Mh bulb preform like an HPS...
In the ideal world you would veg inder MH and Flower under HPS...

From what I have witnesses... an HPS is the way to go if you have only one BULB.. they are not even close...

The most important factor is proximity..... the farther the light is from the canopy the more the plants stretch...

THERE is NO reason at all NONE.. to allow stretching....
Any serious grower who is INTENT on getting the most from his light will keep the light no further than 12 inches from the foilage...

: )

i love you

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.

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

Red & blue light sources should be seperate things, how else can you give the plants a proper red dawn/sunset.