G2-800w PARmaxx parabolic refraction integrated full spectrum LED grow light - 4x4 cr

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lood like you have some serious MAG deficiency! Look at all the purpling in the stems!!!!

You should invest in some reflective poly black/white sheeting. It's 90% reflective and is $13.88 free shipping on amazon for 10'x10'

new2led said:

wouldn't it be the PAR values rather than the lumens? from my understanding lumunious flux is how the human eye measures light intensity and PAR is the absorbable light between 400nm-700nm that the plant uses to produce chlorophyll A&B in photosynthesis???

Click to expand...

So that we can learn, do you have a link to what you just said about PAR. Because i thought all that was is the angle at wich light comes out of a lamp? and that the lenght wave of a specific lamp or in this case the LED was subject to whatever the specs for said LED is. thanks trying to learn