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GoonerHeClips said:
Very good stuff.  The limonene terpene difference I found perhaps most interesting and worthy of further investigation.  Does heat break down limonene?  Hmm... Does the sunlight in CA and TX and MEX make lemons not lemony?  Hmm...pretty hot there too...Maybe it's the spectrum difference in the bloom light for the probably? Hortilux Super HPS bulb that lacked something that the LED provided?  More likely IMO...

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phychotron said:
Well the lights I'm looking to buy have a life time warranty now; 3 years parts+labor then they will send you parts for life. So after the initial investment its much more affordable in the long run. You'll never have to put money toward lighting again.

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phychotron said:

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GoonerHeClips said:
Very good stuff.  The limonene terpene difference I found perhaps most interesting and worthy of further investigation.  Does heat break down limonene?  Hmm... Does the sunlight in CA and TX and MEX make lemons not lemony?  Hmm...pretty hot there too...Maybe it's the spectrum difference in the bloom light for the probably? Hortilux Super HPS bulb that lacked something that the LED provided?  More likely IMO...

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I know that I can put my hand in the sun, and feel fine. I put my hand under an HPS for 5 minutes and I can feel the skin drying out. The problem is that there is too much IR that cannot be cooled, it HAS to hit the plant and be shed as heat.

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GoonerHeClips said:

It sounds like you are basically agreeing, but think of spectrum as heat.  This might be a fair comparison with the IR and saunas and their heat effects.  Perhaps the LED is more of a daylight spectrum arrangement than the Hortilux HPS as well?

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Infra red light is heat. Its kind of a strange concept, but its true. In fact all light hits a surface, reflects at a weaker intensity and leaves a little bit of energy in the form of heat.

Ya, pretty much the whole point of LED is that your trying to mimic the PAR curve as much as possible--Photosynthetic Active Radiation, the light the plant actually sees. Not necessarily what matches the sun, but what the plant actually responds to.




HPS's bulbs are not attuned to the PAR light and an inherent flaw HID lighting that they produce an excess of IR light that the plant must dissipate. I'm not sure how this compares to the sun's amount of IR, but I know I can feel a huge difference between the two. Most peak in the yellow and orange range which is not as efficient for plants as red is. HPS is more attuned to the human eye (Lumens, LUX) than it is for plants, thus rated in LUX. 



Here's the sun's radiation, at 6000K, displaying a peak in the yellow range.


Not all heat is created equal. The dissipated heat in a sauna will warm a room up, but its not going to have the same effects of bombarding an area with constant, focused radiation. LED's dissipate heat out of the top of the fixture, where HID project it as IR onto every surface it touches.

I guess the real test to see if its an additive property of light is to do an HID grow with supplemental LED. If the terpenes go up by adding the LED to the HID then its based on PAR spectrum, and if they stay low it would be the intensity of the light. Or so I would guess.

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phychotron said:
Well the lights I'm looking to buy have a life time warranty now; 3 years parts+labor then they will send you parts for life. So after the initial investment its much more affordable in the long run. You'll never have to put money toward lighting again.

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This Lifetime Limited Warranty does not apply to damage from any of the following: normal wear and tear, improper handling or installation, tampering or opening of components, failure to provide proper maintenance or any improper packaging or shipping of the light to Advanced LED.

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