uh.. I don't think a flourescent can burn a leaf even with a magnifying glass.. hehehe

Brown tips are a sign of over fert.. some growers will fert until they see the tips go brown .. then they will reduce nuts by 20% and that will be their optimal nutrient (pph) level...
Garden Knowm Reviewed by Garden Knowm on . growing help...all input is appreciated ok i'm pretty sure yal have answered this question before but her eit goes....ok what would it mean if a plant's bottom leaves (the round ones that first sprout) turn brown and start wilting away? also one other leaf is kind of wilted but still anice green...it was planted dec. 1st and didn't sprout until like 6 days later ....it seems to be a healthy plant it has nice color and nicely developing leaves it's just the two bottom leaves and only part of one of the others....also another one is Rating: 5