Is this nute burn? Or something else

Here are some updated pics taken about 20 mins ago.

They seem better. Giving them plain water for about a week longer then might switch to flowering

*EDIT*

yeah I know turn my hps off - sorry I will take better pics out the tent later. :P

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Last edited:
IMO, if it were light burn, the top of the canopy would/should be the only part affected. But this appears to be on some of the lower leaves, as well.
I don't believe it's nute burn, either. With it showing as pronounced as it is, it would be all over your entire plant. Just my opinion.
Dr. Who was probably on target with the watering suggestion, and the potential for the umbrella effect with smart pots. If your soil doesn't get thoroughly watered, it develops dry pockets that will let the roots die. If this were to happen often, and in different areas of the pot, well...
Here's a couple more places to look for help with sick plants-

http://www.growweedeasy.com/marijuana-symptoms-pictures
https://www.icmag.com/ic/showthread.php?t=11688

They give a lot of specific information on the conditions that can cause lockouts.
 
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