Strong stem but droopy top. Discolored leaves

H

huntedwolf00

Member
5.9 PH
2.0 EC
week 3 veg
Led at 30% power 4 ft height

no idea what the issue is here. Could it be magnesium deficiency? Or light burn?
 

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I'm seeing the beginnings of a magnesium deficiency on some of the leaves on the right side of photo.

I wondered what your growing media was. 5.8 suggests some kind of hydroponic? Also, 2.0 mS/cm seems high, at edge of availability, basically a maximum value. If it was my grow I'd reduce that to 1.3 or 1.5.
 
Thanks for your response.

I grow in coco. DIY drip, feed bout 12 times a day at 200ML per shot.

I’m guessing it’s magnesium deficiency too. I’ve been only supplementing cal mag at low dose (3ml/g) every other feed.. might not be enough. Coco is inert
 
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