Viewing post #3081342 by BearDog1906

Rubi said: I haven't done a scientific study yet, but I've been having leaf curl on tomatoes under LED lights. My anecdotal evidence is that I tried one tomato only using light from the window and it didn't have the problem that the ones under the LED had. It was terribly leggy, but no leaf curl and subsequent problems.

The lights were one of my thoughts as well. I didnt know if it was too intense, but based on my light sensor reading, PPFD and DLI numbers are within the recommendation in the center of the light, and slightly below on the outside edge of the spectrum. I have also experienced curl but always equated it to over zealous watering....maybe there is something to the LEDs?