Shredder111
Well-Known Member
Not necessarily the fastest growth, but short and bushy?
Thanks
Thanks
What is the best color (Kelvin) for short and bushy growth?
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SmokeyMcSmokester
Well-Known Member
Try using Bushmaster by Humboldts Own. It stops vertical growth, and makes the plants bushy.
Shredder111
Well-Known Member
I'm actually asking so I can pick a flouerescent bulb.
Shredder111
Well-Known Member
Boom de boom up to teh tops.
Shredder111
Well-Known Member
I have wanted to ask this for a long time, but how does a bulb with 2700K grow vs. 6500K? What is the difference and why is one used for flowering and the other for veg? Can 2700K be used for veg? Will there be any ill effects?
You raise an interesting question! I have pondered that too (but never really tried it). I have always just assumed that it would be about the same as using either Metal Halide -or- High Pressure Sodium all the way through a whole grow (not really equal, but do to the fact that they are of different spectra - one leaning more towards the blue and the other towards the red). Obviousely they both work for both purposes - so why should 6.5K and 2.7K flourescents be any different?
I believe that 6,500K flouros (or MH) work better for vegging and 2,700K flouros (or HPS) work better for flowering. But either one should work, at least, ok - and a combination should work even better ("2 or 3 to 1" and then reverse the ratio "1 to 2 or 3" for flowering. MH lights and 6,500K flouros are skewed more to the blue part of the spectrum - more similar to mid-spring through mid-summer sunlight. Whereas HPS lights and 2,700K flouros are skewed more to the red part of the spectrum - similar to late summer through fall sunlight (it has something to do with the way the Earth tilts on it's axis - I don't want to get too technical, it gives me a fuckin' headache!).
If you are just trying to eliminate the Daylight Flouros (6,500K) all together, i can understand why. I seem to catch good deals on 23 watt, 2.700K CFL's all the time (about a buck apiece in a 4-pak), but those 6,500K CFL's are always at least 3 bucks a pop!
Hi, did this product work for what you said it would?
Where have you found HPS 2700k bulbs??? At best I have only found 2300k!. In cfl' I have found various kelvin bulbs from 2100-2700k but not in any HPS. Thanks for links if you have found some.
vostok
Well-Known Member
any cool white like around 5000-6500 kNot necessarily the fastest growth, but short and bushy?
Thanks
makes a short squat plant
ask any local noob ...lol
good luck
Yeah this guy is correct. I've read loads about colours and short stems and bush is 5k up but I don' know.if.there is a difference between 6500 and 7500 for example. I know to much blue hinders growth lol
vostok
Well-Known Member
vostok
Well-Known Member
Cool white cfl or led about 6500 kelvin
blue rays are very much shgorter than the red
so keep 'em closer than normal
keeps an eye on temps
vostok
Well-Known Member
vostok
Well-Known Member
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SchmoeJoe
Well-Known Member
Bushmaster uses a pgr. Don't use it. Besides being a pgr it's only meant to limit the stretch during the beginning of flowering. If you want to get dense and bushy vegetative growth you should start by looking into how temperature differential (tdif) affects growth.
Also use more of an all purpose NPK ratio. As far as light spectrum the best overall growth will come from full soectrsp light including UV. The actual K rating could be anywhere from 3k to around 6500k. Go to the Eye Hortilux site and check out the PowerVeg bulb.
Kingrow1
Well-Known Member
Arcadia aquatics in the Uk supply a blue flourescent called freshwater, a red called tropical and a full spectrum calked plant pro. The lights are tri phosphor so contain some of all spectrum but are weighted in one i.e. blue or red.
Blue activates certain photoreceptors that keep plants shorter and stockier where as red dosent and has its own set for other stuff like idk.
It couldnt get simpler, cmh are more full spectrum but weighted to blue or red and hps is red with a touch of blue.
All light does the same thing, still get stretchy plants with pure blue light, quantity is a factor and the fuller the spectrum the bettet.
That said blue flouros and red hps do just fine as would just one on its own for the whole grow...
Blue activates certain photoreceptors that keep plants shorter and stockier where as red dosent and has its own set for other stuff like idk.
It couldnt get simpler, cmh are more full spectrum but weighted to blue or red and hps is red with a touch of blue.
All light does the same thing, still get stretchy plants with pure blue light, quantity is a factor and the fuller the spectrum the bettet.
That said blue flouros and red hps do just fine as would just one on its own for the whole grow...
MIGRO Irish LED developers say you need 12-20% blue depending on watts. Anything over 100w you need 12-15% blue to prevent stretching but anything over I think it was 60% but don'
Quote me on that is almost the same as all blue lights and will hinder some production and cause stretching but less fruits and blooms. You should check MIGRO out. I know 7500 is 1000 more blue then 6500 but I.mean is there any signifiant state in growth changes or does it end at a certain point where colour is no longer a growth booster and just causes stretches....
Red also enhances root development in major ways. Also it increases dry weight and yield but at the cost of poor leaves and stems strengh. It' weak and flimsy. Go check MIGRO and watch the sessions of all blue grown, all red grown and full spectrum. It' quite interesting.
Sprsmoker13
Member
6500k then 4000k for prebloomNot necessarily the fastest growth, but short and bushy?
Thanks