is this light stress? she drooping her leaves and ...

When was the last time you watered her? Looks like she lacking. What are your temps humidity? How far away is the light? The more info the more we will be able to help 👍🏼

Not sure but could be Zinc deficiency: https://loudclouds.co/wp-content/uploads/2016/07/marijuana-deficiency-chart-jorge-cervantes.jpg https://www.growweedeasy.com/cannabis-plant-problems/zinc-deficiency https://www.royalqueenseeds.com/blog-zinc-deficiency-in-cannabis-plants-n606 Hope that help

One more thing, as for temperature I have found that the absolute best temperature to run my tent at is aprox. 23 to 26 degrees celcius (im canadian). anything above that is probably ok but i find it stresses the plant out too much so at all costs try to get your temp at that range and use the vpd chart as a guide it makes all the difference. https://vpdchart.com/

Hi. to me looks like a couple things. top leaves are discolored. I looked at your diary looks like you are doing an organic grow. I am not familiar with the nutrients. Bu to me it looks like the new leaves that are coming in do not have enough nutrients they are very yellow. Having said that it could also be heat and light bleaching from the light. You would be the best judge of that. I would recommend with a marshydro to have the light more than 18 inches away from the plant. I run the Mars ts3000 and I always have it at lease 30 inches from the plant. I know that sounds excessive, but i get incredible results when I do that. I also almost never run my lights at 100 percent. Just look at the leaves if they are drooping and you dont think its a watering issue, raise your light and turn it down a bit. Please check out my grow you will see what I mean by the above. If you are soil and you think it is a nutrient issue go get a bag of worm castings and add a large scoop of castings, it will help the plant to get everything it need right away without having to break too much down. Hope that helps.