Leafs slim and down

Agree with others. Advanced Nutrients are high concentrated. I use 1.5ml/l maximum at bloom phase if feeding every day. If feeding is one in three days I use 2.5ml/l maximum.

you’re underwatering and feeding too much. your temps are high but a normal plant can handle it. autos have ruderalis genetics so i dont know what the hell they can handle but sativas can handle those temps with adequate water. either way water them well, cut your feeding in half, if possible get your temps down.

Droopy leaves are a sign of one of two things: overwatering or underwatering.... if you don't let the pot dry out between waterings/feedings, they're going to droop .... but if you don't water for a day or two AFTER the pot is dry, they're going to droop. You'll figure it out! And btw, I start all my grows (I only grow autos) with more bloom nutes than grow nutes so that is NOT something to be concerned about! It's all in the watering..... Good luck!

i just think she couldn't handle the heat with such a low humidity, maybe she was thirsty too at the time.

I have always understood heat stress to taco and roll the other way. To me this looks like wind burn. Do you have a fan directly blowing on the plants? You want your fan above and below the canopy not directly on the plant Good luck and Happy Growing.

I agree , because when I started to grow with the 600 w hps in summer this happened to me , but th temp was much higher maybe 34. I killed them nearly.

and indeed like premiumbudsEU said (i didn't had the time to look at your diary) you should get like 45-55% humidity with 25-27 degrees temperature, its way to hot in your room. You soil will dry up to fast as well.

This is the result of 30° and 40% humidity - Lower the temp and raise humidity to 50 at least. Be sure to give her enough water when watering in the right amount , this has nothing with nutes to do Good luck

Hey Startergrower10, Can you lift your pots? If the pot is light, you have to give water fast. She will recover in a few hours. If the pot is heavy, you have been overwatering her. In other cases it can happen because of pests, but i don't see any signs of them. Goodluck growing.