Answers about CFL, HPS, How Much Light...

[Opie Yutts]

like this:

[Gheizen64]

I've already got that chart... solar light power conversion i pretty simple (almost linear), it is about 60000 lux ~ 100W/m^2 of light power (so 600 lux ~1 W/m^2 with this curve), HPS lamps have a pretty different light curve... using clorophyll absorption i'll do some brainstorming on the matter.

By the way, high efficiency led have a rate of 80% light conversion, some even striking the 93% rate, that means, to have a light equivalent to the sun, with a full red-to-blue spectra, will use 120-130 W of white LED. Equivalent to 60000 Lux (60000 Lumens /square metres, about 7000 lumens /sq foot). Too bad they are mostly super advanced leds, commercial ones will have much lower efficiency.

[Gheizen64]

Please cancel my old post, it's full of error.

Stupid site that contradict one another ><, i'll search some affidable source.

Now i've read on wiki that 93 lumens of sunlight ~ 1 W, but that's shit, because
light irradiate 100W/m^2, and 100*93 = 9300 lumens /square meters (actual sunlight irradiance is between 40k and 100k lumens/square meters) ><

It's madness.

[Gheizen64]

I'm sorry for flooding, but editing can be done only while 10 minutes... wtf?

Anyway, i wanted to say that the Cree XR-E lamp have an efficiency of light conversion from 25% to 40%... (400 W of lamps to obtain sunlight on a 1m^2, pretty shitty)

[ijustloveweed]

If i have one 26 wat CFL and the number is like 2700k or sumthin, that means its better for flowering right? because ive been noticing some slow growth in my seedling and was wondering if this was the problem.

[Kylock]

where can i get hps lights? wal-mart?

[deacantgetme]

to the aussies here im led to belive that cfl is the lights that everyone has to have now cause they are banning incandesant globes.
I may be wrong but its what i was told.

[DasPachy]

So let me get this straight - using CFLs only, while vegging with my CFLs I should use a 6500K spectrum? And for flowering, I should switch to 2700K CFLs?
How powerful can I get CFLs at these spectrums without breaking the bank?

[leadmagnet]

Please excuse me for asking a question that might have been already asked and answered but how do the new CFL's that screw into a standard socket differ light spectrum-wise from the older FL's with the built in ballasts that we all came to cherish and love in cabinet operations in days gone by? We used to do amazing things with small grows in small spaces with the old FL's and I'm wondering if the new CFL's are an improvement.

[leadmagnet]

Ok so dw about my last question, I went to Bunnings and tried to get a 400watt hps coz it was only $30 then I asked this guy what I would use to plug it in to and he said "I dunno" then asked this other lady working there and she said "what're you using it for" and the guy goes "growing his marijuana" and i just fake laughed and said "nah im using it for plants though". F*$^ my blood was boiling he was one of those typical 'stoners are lowlifes' people.

That's a riot. I feel your pain. I think one time or another we've all been there. Just wait until you go to the hardware store to pick up gear to do root bark extractions!!! If you're not careful they'll start treating ya like a meth cook and call the cops!

Lead