Heat stress, or leaf curl virus?

Coup

Coup

I figured this would be easier if I just showed you guys:
 
[media]https://youtu.be/LjQe0DK4xWM[/media]
 
Heres my take on this. Its both the hot weather and your plants wanting more calcium. The heat will make the leaf curl more visible. I would use something your plants can intake fast, like Cal-Mag. Start upping the Calcium and as for the heat if you were to set up a Shade Cloth I'm sure it would really help.
 
Here is how they looked this morning (~8am):
 
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Almost no soil grown plant needs calcium that bad.

Looks like a case of high heat and possible overwatering. That can mimic any number of deficiencies. I have a hell of a time with that every season, calcium or no calcium...
 
I went ahead and gave them a hit of Cal-Mag for science and sprinkled out some bone meal for the tomatoes. I haven't watered the plots for about 3 days or so and it seems like the plants are improving a little - perhaps there was just too much water, like you solid7 said.
 
If it's any help to you at all... Don't water your plants again until you can feel the leaves soft and droopy 2 hours after sunset. If they haven't bounced back by that time, it isn't heat, it's time to drink.

That works for me in my area, growing in containers. Maybe it works for you in your area...
 
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