5000k CFL's?

Would three, 24w 5000k and three, 14w 6700k work alright from this grow? Then during flower switch the 6700k to 2700k? Their blue mystic autos btw.

nahhh get 6 of them 2700K ..

runn 3 with them 6500K fist two weeks untill you see hairs then go all 2700K

5000k's r solid tho, Used them for entire veg and replaced around half of them with 2700k's for flowering

Do you have an intake fan at all? Or a fan circulating the air inside the cab?

johnnydro said:

5000k's r solid tho, Used them for entire veg and replaced around half of them with 2700k's for flowering

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yep 5000K is actualy ok .. atlest the best of them you can get at walmart aso. a lot bettwer then 4000K .. but now we are talking Veg and normal plants I belive .. he is growing Autos .. and have some 6500K allready .. so I would for sure go for 3x2700K for them small autos ..

ok so i can keep what i have then when i start to see hairs switch them all to 2700k or just switch the 6700k for 2700k and leave the 5000ks

5000k isbetter than 2700. yes i would go with your original plan

if you really need to prove it to yourself look up thw spectrums on a manufacturer website. the 5000k is a 5000k because it has sine blue but is has all the red in the right places than the 2700k.

do what you find best .. with what you have ...

but yea in general .. the more Lumers the better .. specialy more when they flower ..

a Veg plant indoors need atlest 3K Lumens Per sq. ft.

a flowering plant indoor needs atlest 5K Lumens per sq. ft. (10K will be much better if you want big dense nugs)



about colors or Kelvin ..

a plant need all colors (cept green) so it will boath need Blue .. red and yellow light .. to grow well ..

but in general a young plant in Veg will need more blue light (6500K)

and a flowering plant will need more red/yellow (2000-3000K) light to grow buds ..

a 5000K light will provide most yellow light I belive .. witch is`t bad .. cept if you only have 5000K bulbs ..

agin .. if it was me .. and we are talking Autos .. I would just go for some 2700K bulbs .. 23W or bigger .. as many as you can fit in ther ..


if you could get/afford 6 Y splits to fit your two light rails you could fit 12 cheap 23W bulbs .. or just get 9 of them 23W 2700K bulbs and mix em up with them tree 6500K you have ..

that would be the most logical thing to do if you ask me .. them autos need some red/yellow light ..


Ooh yea .. and if it is to much work with the pump and moveing the plants up ..

I was thinking you could use a pice of plywood to mount all your lights on .. and move that up and down .. just keep the eletrick wires and connections aso. over the plywood .. make some strings with some hooks or sumthign ..

ohhhhhhhhhhhhh man, slipon your just getting started, i can tell from your post you using a lot of common sense, which is good.
but.... science doesnt always make sense till you break it down.. kelvin is just a color rating and has no relavance to the NM of spectrum emitted here is a 5000k bulbs light spectrum
http://www.drsfostersmith.com/images/adinfo_florasun.jpg

as you can see a large spike at 460nm and 620 630 and 660 nm which are mostly not yellow but the blend of colors would make it appear yellow.

th first thing you want to learn is using lumens as a stand point, so anything in range between, 2000-4000 lumens in veg is adequate given you use the proper spectrum. lumens is a measure ment of what the eye can see, not what plants see. i use wattage per square ft personally.

second is kelvin is the most inaccurate way to measure color.

try to read this:

http://theweedscene.com/indoor-marijuana-grow-lights/

polyarcturus said:

ohhhhhhhhhhhhh man, slipon your just getting started, i can tell from your post you using a lot of common sense, which is good.
but.... science doesnt always make sense till you break it down.. kelvin is just a color rating and has no relavance to the NM of spectrum emitted here is a 5000k bulbs light spectrum
http://www.drsfostersmith.com/images/adinfo_florasun.jpg

as you can see a large spike at 460nm and 620 630 and 660 nm which are mostly not yellow but the blend of colors would make it appear yellow.

th first thing you want to learn is using lumens as a stand point, so anything in range between, 2000-4000 lumens in veg is adequate given you use the proper spectrum. lumens is a measure ment of what the eye can see, not what plants see. i use wattage per square ft personally.

second is kelvin is the most inaccurate way to measure color.

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sure thing .. you do know we are talking autos .. right ? and he have some 6500K bulbs on hand ..

and sure 5000K have it all .. it just that 2700K do make more red and yellow and 6500K do make more blue .. so why choose 5000K I may ask ?


about Lumens .. I know .. just trying to keep it simple for our man who seems to have a hard time ..

I use my Light meter .. who mesure in foot candles .. if you read my post in here you will see I made some comments about T5/Clf lights and HPS and the use of foot candles and lummens aso ..

I know it is`t evry thing .. but it is a good rull of tump .. specialy when you try to explain it to somebody who dont understand ..

Im not saying Im a expert .. not even close .. but I did do my basic research and I do know that if I had them 3 bulbs to choose from .. the 5000K would be the one I left ..


but thanks for the link can allways use another chart at hand when yet another newbie dont belive you ..

ahhhh sorry Polyarcturus .. ther are no comment in here about that ....sorry ... that is in one of his other threads about his grow box and lightning ..

Slipon said:

ahhhh sorry Polyarcturus .. ther are no comment in here about that ....sorry ... that is in one of his other threads about his grow box and lightning ..

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OP said they were autos in the OP. Is that what you're talking about?

nop .. I talking about my comment about foot candles and Lumens and mesurement of the light aso ..

but I made a mistake .. since ther is no post like that .... in here ..

its in one of his other threads wher he ask about his light .. dunno ? just think he got the wrong box and wont face his light sucks ?

but Im to stoned to argue realy .. and keep trying to tell him that 3x 16W 6500K bulbs wont cut it for his 6 DWG Autos ..


Peace

With CFL my logic is very very simple - get both white/blue and warm/red bulbs, and pack as many of the bastards in as is practical, with the highest wattage you can. Proper bulbs, especially the higher wattagers are quite expensive it seems at first (I pay about £20 per 125w). If you can't afford to invest in many to begin with, buy an additional bulb when you can afford it and build up your light stock so to speak. Its better IMO to have the brighest on top, with the rest positioned so they shine down/into the sides as well, for max light penetration.

I'm not a fan of the industrial hot bulbs, just personal choice, I've got a major paranoia of fire when I'm not at home. I compensate by going mental with CFL watts and sheer quantity

yeah im pretty buzzed to much so to argue at least we agree there, im not gonna get all into depth right now so will i willl kee[ it simple. fulspectrum make sbetter buds. cfls are grea but 2700k mathmatically does not produce more red according to the spectrum charts.... if you want to check there is some serios spectrum dudes in "LEDs without LEDS" (they use t5)in the indoor growing section. they can prove to you the ratio of plant usable light in the 5000k is greater than the 2700k. trust me ive learned many things about spectrum overthere when it comes to flouros.

i would really like to see someone do a side by side 2700k vs 5000k.(or in t5s case florsun vs maxlume)

ahh ok .. Ill look in to that ..thanks .. and Im not some stupborn kid that think all he knows is right .. I like to learn aswell .. and I belive you can learn new stuff evry day .. even as you get older ..

but evry guide and evry chart and evrybody I have spoken to all claims 2000-3000K is best for Kelvin/right colors for flowering ..

but do that means my 2100K HPS is less effetiv then a MH on 5000K ?
and I mean to flower with (I have 6 tube T5HO to Veg with and I keep 4x6500K and 2x 2700K in it)

lol yes. but on the other hand not they have the HPS with added blue(your is probalbly one i think they kept the old K rating to simply not throw people off) they are about equal so no.

the only 5000k MH(Venture lighting) only works in a base up position, so not really the best for out types of reflectors anyways. grow guides teach the basics i try to help anyone i can with the more up to date information i have a lot of grow guides are 5-6 years old so... there is always new and better info coming out just got to learn as you go about some things.

this is what i run is what i run in my 4ft 6 bulb t5 in veg(check out my woody haze it looks fucking amazing under the t5 check my sig)

x210,000k aquasun UVL(the best all round veg bulb for t5, this one is special comparable more to a 6500k than a 10,000k) x2 florasun(we discussed these already 5000k) x1 460 nm actinic truelumen,x1 420nm actinic truelumen