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Old 10-18-2017, 06:26 PM #11
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penetration is a hoax, wattage has nothing to do with penetration, the best "penetrating light" would be a 1mw laser light, it goes on foreverrrrr!
use INTENSITY instead
yes you need a certain amount of intensity to flower succesfully but not nearly as much as we tend to use
lower your lights, spead your lights, have a great overal spread and you dont need to worry about intensity
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Old 10-18-2017, 06:46 PM #12
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maybe if you only want buds at the very top of your plants. cfl and led screw bulbs are only produce useful light to 12 inches. your average hps 100w and above light is useful 2+ feet away.

also most of the heat in an screw in led/cfl bulb comes from the ballast built into the base of the bulb. most of the heat in a hps comes from the actual bulb itself.

i dunno wtf you guys are on about but im outta here. peaces.
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Old 10-19-2017, 03:13 AM #13
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Nah, heats comes from where there is current.

Penitration is far from a hoax. It depends a lot on spectrum that plants do not use. Certain colors in the light help the light travel. That's why some led add yellow.

Light tech and theory are stull evolving.
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Old 10-19-2017, 03:55 AM #14
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pfft penetration lol.

create a full canopy ftw.
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Old 10-19-2017, 11:20 AM #15
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"penetration" is something related with sex. I don't know why they started to use this term, but in the field of electricity, lighting and lighting efficiency this term doesn't exist.

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Old 10-19-2017, 12:13 PM #16
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Inverse square law.

We all know.

That's why you use 90 degree lenses.

It's funny CMH and HPS are coming out with "new technology" as their stupid old street lamps are being replaced with LED! hahaha
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Old 10-19-2017, 01:41 PM #17
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Originally Posted by angelgoob View Post
Inverse square law.

We all know.

That's why you use 90 degree lenses.

It's funny CMH and HPS are coming out with "new technology" as their stupid old street lamps are being replaced with LED! hahaha

You know, in public lighting ICR is veeeery important, that's why they are replacing. MH were the lamps with a good chromatic response and have been surpassed by LEDs.

Now is the moment we growers start replacing our sodium lamps by leds. The technology is there, efficiencies are already these of HP. We just need price reductions. I'll keep my 600W HPNa for a couple of years.

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Old 10-30-2017, 03:48 PM #18
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Imo, no experience yet...

LEDs are the future.
They've got a relatively long life (when manufactured well) & their spectrum is improving constantly. I've been looking at manufactured units made by CA Light Works because I'm nowhere near an electronics parts supplier for DIY. (Fawk)

@Easy7,
I'm curious where you got that fugure from? & has it been tested in the real world?
Is that figure good for any electrical conductor or is just copper or aluminum?
The physycal differences in the various conductors leads me to believe that what you state is a simple generalization. Ie... Silver oxide will conduct electricity much more effeciently that aluminum. Since heat is a result of friction wouldn't the material that has less resistance to electron flow run cooler? (If even a bit)
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Old 11-01-2017, 02:22 AM #19
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CFL many bulbs

HPS inefficent

Cree CXB3590's. Wooooo!
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Old 11-03-2017, 07:48 PM #20
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COB LED's are the future.
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