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decherdt · March 31, 2020

I should probably just stay out of it but, maybe just maybe it's the LED.
Are they floodlight shop lights or grow lights
I got twisty purple seedlings under LED flood lights, not bad as yours though.
http://tomatoville.com/showpost.php?...6&postcount=19
Plus its not all of your seedlings?

When susceptible crops are grown under ultraviolet-deficient environments, such as light-emitting diode (LED) sole-source lighting that supplies only red wavelengths, intumescences are most severe. However, the incidence of the disorder can be diminished or prevented if crops are grown in environments providing ample blue or ultraviolet wavelengths of light. End-of-day far-red lighting has also shown some promise in mitigating the disorder.
https://www.researchgate.net/publica...n_Plant_Leaves

Disregard if your lights are the same lights since forever.....

March 31, 2020	#6
decherdt Tomatovillian™ Join Date: Apr 2011 Location: Fort Worth, TX Posts: 329	I should probably just stay out of it but, maybe just maybe it's the LED. Are they floodlight shop lights or grow lights I got twisty purple seedlings under LED flood lights, not bad as yours though. http://tomatoville.com/showpost.php?...6&postcount=19 Plus its not all of your seedlings? When susceptible crops are grown under ultraviolet-deficient environments, such as light-emitting diode (LED) sole-source lighting that supplies only red wavelengths, intumescences are most severe. However, the incidence of the disorder can be diminished or prevented if crops are grown in environments providing ample blue or ultraviolet wavelengths of light. End-of-day far-red lighting has also shown some promise in mitigating the disorder. https://www.researchgate.net/publica...n_Plant_Leaves Disregard if your lights are the same lights since forever..... __________________ 500 sq ft of raised rows zone 8a Last edited by decherdt; March 31, 2020 at 06:10 PM.