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Old 03-01-2017, 09:14 PM   #41 (permalink)
cincinnana
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Default Re: Grow light recommendations?

Quote:
Originally Posted by aruzinsky View Post
Look for local bargains on LED bulbs for household lighting such as this one:



The $0.99 bulb on the left is rated at 1600 lumens and 14 watts for a luminous efficiency of 114 lumens/watt which exceeds that of any fluorescent bulb. And, even at equal lumens, these type of LED bulbs are better than CFL for plants because more light energy is produced between 620 and 700 nm for which the human eye is insensitive but plants strongly utilize. Fluorescent bulbs typically have a sharp spike at 611 nm (orange-red) and almost no output at longer wavelengths.
Call me crazi but.

Is a 2700k lamp a little short for a grow lamp .
While a balanced 2700k-6500k cfl setup is more suitable for optimal growth and flower.


I would balance the nm with a 6500k spiral @68 watts 8 inches above the plant

Are inexpensive household 2700k led lamps better than alternative comparable cfls other than energy usage
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Last edited by cincinnana : 03-01-2017 at 09:27 PM.
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