Leaves curling up on the edges

drdodge29

Well-Known Member
Babies are 2 weeks from the day they were about 1/2" above the starter plug
Temp 77 f
Water Temp 73 f
PPM/EC 550/1.1
Humidity?????
Lights 400 MH 12" away(originally it was about 8" away until I noticed leaves curling up on 2 out of 5 plants. And on both of those plants there a very little, barely noticeable, yellow marks on the very tips of only 1 leaf from each of those 2 plants. I've got plenty air movement with 4 fans going.
Could it be from the light being 2 close or nute burn?:peace:DSC00633.jpg
 
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