my buddy and I are gonna be growing about 4-5 plants in an area about 5 feet by 4 feet and around 6 feet tall. we were wondering if this 400w mh lamp would be good for us? http://www.bghydro.com/BGH/customkit...c=HLMH04SM&eq=
Thanks!
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my buddy and I are gonna be growing about 4-5 plants in an area about 5 feet by 4 feet and around 6 feet tall. we were wondering if this 400w mh lamp would be good for us? http://www.bghydro.com/BGH/customkit...c=HLMH04SM&eq=
Thanks!
Yeah, it would, but also concider getting a HPS for flowering. Plants need a blue and red spectrum of light. MH has blue, so its great for vegative growth, but HPS has a more red spectrum so you'll deffintaly see the differnce, but you can use a MH all the way through. Good luck.
You don't have a lot of height to work with, you might be better off with many CFL like BobBong has used and Harddon has used to good success. Save the heat in a space that small and focuse on other issues of growing and not deal with the heat.
ZANDOR....you used the "C" word.....
now I have seen everything...
should he use miracle grow?
LOL
6 feet is plent of height. With the light your intending to use, keep plants 2-2.5' in height, as you will expoential loose intensity with every foot away from the light source.
well its about 6 feet 8 inches tall cause im 6'6 and i can stand under it and theres about an inch or 2 above my head...lol..we are just worried about 400w being not enough...is 400w enough or do we need a 1000w???
Get one of these http://www.specialty-lights.com/901154.html with the EYEHortilux 6500k this MH bulb has the best spectrum I have seen. It has excellent blue with better red than most HPS bulbs (if you disagree put up a spectrum analysis please.) The cool tube will let you grow your plants real close to the bulb too.
[attachment=o56404]
Ok guys, hope you can deal with the heat then. Look at the cubic feet too I just think that if the plants starts off 12" off the ground and normal 30-45 day veg the plant will be about 3-4' tall plus the 12" to start with. Add some flower time where they stretch and you have a 5'10" plant or so and no room for the light to go up anymore and displace the heat.
I was just thinking about the room above the light to help displace heat is all.
Good luck hope it works out great!!
GK even I have one or two of those lights. How do you think I light clones or seedlings to start them dude...................man get real..................<snap>:smokin:
I would purchase a 400w HPS ballast, that way you can use a MH conversion bulb for veg, then stick in the HPS bulb for flower. You get the best of both worlds, and only have to buy one ballast.
I would avoid 1000w, as 400w is sufficient for a grow of your size and uses much less electricity. Plus, you might have heat issues with the 1000w.
Height won't be a problem, as long as you don't let them grow 3 feet tall before flowering.
if ya go to 1000w mh you'll never use anything less again! MH flowers just as good as hps dont let anyone fool ya. as a matter of fact it's this writers opinon and thousands more that mh produces tighter buds with less space btwn interlodes. r
p.s i grow under stairwells all the time with 1000w mh, just need to get rid of heat & fast. r
WHY MH...
go with HPS....
Tripp, if I had to use one type of bulb from start to finish, I would go with MH.
But are you trying to say that after vegging with MH, its better to flower with MH than HPS? If so I think your trippin. Pun DEFINATELY intended :D
SMOK
Are you saying that MH is the better of the two blbs..
I strongly diagree..
If you have to choose one bulb.. GO with HPS..
ALWAYS..
no exceptions..
love
hmmm, I never used HPS but I thought they were poor for veg. Maybe I'm wrong, and coming from you, now I definately think I'm wrong.
Happy 3000th post!
3,:dance::dance::dance: posts... wow. I'll need another 10 years to hit that... unless... oh god no... dear no... I DONT HAVE A LIFE EITHER!!! hehe I'm just messin' with you GK.
GK, have you compared the spectrum output on the best HPS and the best MH to me it looks like the MH produces a much better spectrum. As a matter of fact the usable spectrum available with the best HPS looks rather wimpy next to the best MH. Than again you can't get any of these companies to do their spectrum analysis the same way. Some companies even move the colors away from the proper wavelengths making their analysis seem rather shady. I really want to measure the useable wavelengths of a variety of bulbs... Maybe someone has already done this... anyone...
Also from what I can tell with MH's a 400w is much more efficient than a 1kw as far as the energy used to produce an amount of light. Before I go to LED's I will be using 2 MH 400w bulbs in 2 separate cool tubes. My indoor is ScroG, btw. They will be the EYEhortilux Blue 400w (long.) I attached the company's spectral analysis of this bulb in my last post. It looks fantastic.
FERMENT... or I'll shoot.
Some enjoy teaching and giving free knowledge while others enjoy knocking them down as it makes them feel better about their low self esteem. Thats the difference between growers and harvesters.
:thumbsup: :dance:Quote:
Originally Posted by karmaxul
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.
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 :)
Is this what you want?Quote:
Originally Posted by FERMENTATION
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..
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.Quote:
Originally Posted by karmaxul
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.
Dude that was not even close to what you asked.Quote:
Originally Posted by FERMENTATION
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?
Zandor you need to double check that quote source. It wasn't me who asked that one.
Quote:
Originally Posted by FERMENTATION
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...
:)
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?
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.
Thanks Zandor great infoQuote:
Originally Posted by Zandor