Here is 10 days under COB. before/after for lettuce
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robuncnn, I see that you are getting some of the deformation going on on your lettuce leafs. Do they have a thick "leathery" feel to them?
I have been playing around with some lettuce under HPS, Hortilux Blue MH, and a Cannabis tailored LED Panel (5K white, 630,660).
What I am noticing is massive root production under the led but stunted/mutated top growth that is very thick and leathery.
HPS seems to put on the most mass but the texture seems a bit off. The Horti Blue is beautiful all around.
I also noted a lot of that tip burn on the inner growth of the led that only shows up when the heads should be approaching finish time.
All lettuce is in coco and hand watered with the same hydroponic solution
My take away is that lettuce is very spectrum sensitive and I need to do more testing. I am hopeful to find an led solution that will work well in a stacked shelf system so I can crank out some lettuce indoors
Left to right - Hps, Hortilux Blue MH, LED
New grow issues on led
Variety #2 really showed different structures under the different light sources.
Left to right - Hps, Hortilux Blue MH, LED
I really appreciate you folks in this section of the site. Such great information being shared over here
