Could I get advice on visuals of my plants?

Hey gang! I’m hoping to get some feedback on my plant now that I have a PPM pen. Here are some picture updates. I’ve been doing my best to keep the plants around 77f to prevent heat stress.

I’m worried they either aren’t getting the right amount of nutrients or too many? I’ve looked through a couple “Whats wrong with my plants” guides, but at this point, my head is spinning.

Could anyone help me with their take on it?

As for the watering cycle, this is an aeroponics system that trickles water down on the roots set to 1 min of water every 1 hour.

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