brown spots and yellow leaves @ 5 weeks flowering

homer371

Well-Known Member
Can anyone tell me what these leaf problems might be due to?

yellow leaves & brown spots:
oct2.jpgoct2.x2.jpgoct2.x3.jpg


yellow tips everywhere, even near the bud sites:
p_oct2.jpgs_oct2.jpg

I suspect a magnesium deficiency and/or root bounding (they're in 1-gallon pots with good drainage)... Ventilation is so-so (one oscillating fan inside a medium closet). I'm feeding with 1-2 ml of dyna-gro every 6 days, just ph'ed water in between.

Any ideas would be greatly appreciated!

More plant info in my grow journal below, or just ask me. Thanks!!
 
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