I just performed LST on my White Widow then I found two leaves with Burnt marks on the edges. Could it be that it’s to close to the heater which hardly turns on or wind burn or nutrient deficiency. Or, it could have been too close to my ES300 V3 lights bc when I checked the distance they were 28 inches from the plant. So I raised them to 30 inches. My White Widow is in its 5th week of Veg. But, the burn marks were at the middle of the plant on the edge. Help.
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The white stuff is gone