Now I am thinking it could have been a hot spot, since only three leaves are being affected, and if it was overnute wouldn't the new growth feel it first? But I opened up the Adjustawing a couple notches and moved the plant, hoping it will be okay. On another note, I have these light spreaders on my bulbs from Adjustawing, anyone ever use these? Do they actually work? They are suposed to eliminate hot spots, but maybe they are just crap.