HID vs CFL

[Hagbard Celiene]

in a small one plant situation, given light spectrums being ballanced between each situation and all other factors the same, would you see a difference between ~300 watts of CFL, and ~150 watts of CFL supplimented by say a small 50 or 75 watt HID? my main areas of concern are with potency, density, and mass, as well as time till maturation.

Hagbard Celiene Reviewed by Hagbard Celiene on 12-25-2006. HID vs CFL in a small one plant situation, given light spectrums being ballanced between each situation and all other factors the same, would you see a difference between ~300 watts of CFL, and ~150 watts of CFL supplimented by say a small 50 or 75 watt HID? my main areas of concern are with potency, density, and mass, as well as time till maturation. Rating: 5

[harris7]

isn't everyone’s concern potency, density and mass?

time till maturation is determined by the genetics and photoperiod. not so much light intensity.

there is lots of information on this website about cfl's, HID, light intensity and everything else.

it dosn't matter the source of the light, what matters is the intensity. you will be hard pressed to achieve the same intensity from CFL's

[Hagbard Celiene]

would anyone care to speculate as to numbers? as far as i can figure, a 150 HPS puts out 50,000 or so lumens, where as a 42w CFL puts out about 2600. Mathamatically, if i could have 19 or so of those little, cool suckers nestled right up near all of the photoreceptive areas of the plant in question. This of course doesen't even take into account that the HID will degrade much faster than the CFLs will, or CFL of the 55w-200w range, which should produce more lumen per watt. one thing i have not been able to dig up however, is the PAR values for CFLs, thus i cannot make an accurate comparison mathamatically. i am just wondering if anyone has any practical evidence to support these theorys a little more than the anecdotal "i had a plant under CFLs, it was doing ok, but man what a difference that HID made!!!1!11!1"

[smokinbomb]

check out bobbongs thread cfl disscusion its at the top of this forum

good luck-Bomb

[BlueBear]

Simple CFL grow from seed in MG.
http://boards.cannabis.com/showthrea...hlight=healthy
Adieu

[Hagbard Celiene]

nice, that is the kind of shit i am talking about. 1/2 LB. from three plants under 8 '150w equivalent' CFLs. that thread needs to be a sticky.

[JackdaWack]

your missing the point, a cfl will never be as good as an hps for flowering, 8 cfls equaling 150 watts, you can get a 150wtt hps that will give you so much better results. 150wtts isnt gonna get you a 1/2lb on 3 plants thats over 2 onces a plant. A newbie grower isnt going to achieve high results with minimal supplies. read up, this topic is a repeat over and over. Sticky threads are ones that actually have good important info. cfls or hids is a no brainer, you just work with what you got.

[JackdaWack]

you need lumen output thats all your looking for. efficency isnt a must. a 400wtt hps is about 30,000 lumens maybe more. to achieve that would be about 10cfls. no math is needed u want as many lumens the correct spectrum and that is all. Take into account heat, and bulb life isnt a big deal when u see results.

[Hagbard Celiene]

actually, if you look into his thread, he says he used 8 42w CFLs for 3 plants, which, if my math is right, should be 8*2600=20800 lumen. and considering your prescious 400w HPS will need a new bulb in 6 mos. to not dip below this figure, im guessing you spend a lot more on your pot than he does. my question however is, about the
Photosynthetically Active Radiation, or PAR values that CFLs give out. if your suchan advanced grower when it comes to HPS lights, why don't you stop making assinine assumptions about something just cause it is new, and whip out your PAR meter and prove me wrong.

[JackdaWack]

Your PAR theory has little relevence, if you want to spend the money on 8 cfls and fixtures go for it, 1 400wtt hps is 10,000 more lumens, now when you talk about buying new bulbs, i would rather spend the money on one bulb ever so often then 8 cfl's, dont be fooled many the cfls burn out too. You thinking way to far into this, a new bulb is 80 bucks, thats nothing compared to what you get. Im not making any assumtions, if you read up on any of this, there have been grows under cfl and hps, the hps yeilded more then double. if you took the time to look you would see. Im not ever sure why your looking into par levels, radiation?? what are u worried about and so skeptical on. Find a light that suits you. buy a cfl if you worried about heat, get enough lumens so you have a nice yeild. If heat isnt a problem then a hps will be cost effective and easier to use. Cfls are not new, and have been talked about more then you can imagine, just cause your new dont assume i am assuming, expecially on something im activly part of everyday. You want an honest opinion on the matter, so you get it. Dont be upset cause people dont care about PAR becuase its irrelavent, or of no intreast to others. I mean people who make these bulbs take that into account so we dont worry about it. I dont know what info your looking for on PAR but i assure you its a waste of time looking into it. Im still wondering what your question is cause the thread is hid vs cfls, i will say right now a hps light will do better then any cfl efficiently. not to mention the spectrum is perfect on hps's.