Unusual spots on top leaves

whaler007

Member
Can someone diagnose this for me? Spots are slightly circular and look different than cal-mag, but I might be wrong.

Switched to 12/12 on 2/17 (6 weeks)

Temp/Humidity:

70-80F
45% Humidity outside of the tent, 48-50% inside

Medium: Coco perlite

Nutes: General Hydroponics Flora Grow, Bloom, Micro
Per Gallon:

.75 tsp micro and bloom
.9 calmag

From 3/21-3/28, I was on vacation and they were given PH perfect nutrients with a very low dose, low watering, and no drainage (in coco). I was surprised to see that when I got home they looked perfectly fine, could they be showing signs of stress way after switching back to their normal general hydroponics? Also, these spots seemed to appear overnight.

Good news only I hope!

Thank you
 

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