Magnesium, Calcium or Nitrogen deficiency?

Connoisseurus Rex said:
That's what I was thinking until I saw the rest of the symptoms. I think it's more locked up than nute burnt but it's hard to tell without taking the measurements. K will fuck up new growth because it will inhibit the micros... All of them.

In any event, I still think a flush and reset is in order. PH could have risen too high from feeding as well. Especially without regular res changes.
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That's why I say multiple issues.Started by a high EC feed or a few causing lockout. Burned from that and now deficient.
 
Hot rod on the right track, I noticed another issue here,lol

Strain - indica dominant OG Kush
# of Plants -18
Grow Type - Hydro
Grow Stage - veg in photos
Setup - DTW
Light - 1000 Watt MH
Nutrients - Advanced
Medium - Grodan Rockwool 6'' cubes on top of slabs
PPM - 600-900
PH - 5.7-6.2
RH - 40% to 55%
Room Temperature 68 to 78
Solution Temperature -70
Room Square Footage - 60
Pests - None Known
 
GreenSanta said:
healthy plants regardless of what I do, never ever look at the ph, I use nothing but water from the tap connected to a hose... low maintenance! oh yeah the very best weed I have ever smoked.

edit: I forgot to say free
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One of the latest cups at Seattle - 8 of 12 winners were organic.
 
hotrodharley said:
Do you have any idea of the EC/PPM of your base water and of your feeds?Or do you just go by measurement?I'll go with nute burn and not deficiency. Multiple issues here including lower and the newer growth both. Weird little new tips look like micros are short while everything else went long.
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my base water is between 20-45 ppm I use R/O, and I always check my water with a hannah meter before feeding, never above 900 ppm in veg, meter was calibrated a week ago and only a month old.
 
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hotrodharley said:
Do you have any idea of the EC/PPM of your base water and of your feeds?Or do you just go by measurement?I'll go with nute burn and not deficiency. Multiple issues here including lower and the newer growth both. Weird little new tips look like micros are short while everything else went long.
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PPM of base is 25-50; feed is 600-900 I measure these with a hannah combo meter.

More pics:
roots sueno 2.jpg roots sueno 3.jpg roots sueno 4.jpg roots sueno 5.jpg roots sueno 2.jpg roots sueno 3.jpg roots sueno 4.jpg roots sueno 5.jpg roots sueno 6 copy.jpg roots sueno 6.jpg roots sueno.jpg tips of roots sueno.jpg under leaf sueno 3.jpg under leaf sueno.jpg
 
To me it looks like the roots have been damaged but are trying to heal. I think I would lower the EC to around 600 and see what happens myself. You are not going to do much harm for a day at a lower EC.
 
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