Plants saggy and sad looking

[Carbonfylter]

hey all im new here, hoping someone can help me out with my plants, theyre looking a bit sad. My medium is FFOF with about 20% coco , I water about every 3 days or when they dry out, I feed every other watering. Theyve done great until now, only thing I've done different is add a ts1000 to my tent alongside my cheapo 1000w giixer , my tent did get pretty hot yesterday while I was at work as I forgot to leave the bedroom door open for ventilation. Tent got to be about 90F is this just heat stress that they'll bounce back from in a couple of days?

 

[Tango02]

If it is heat stress it’s not bad, any taco shelling visible? That is more an indication of heat stress in my experience.

 

[Tango02]

How close are your lights? Could be a mixture of heat and light stress if lights are too close.

 

[Carbonfylter]

How close are your lights? Could be a mixture of heat and light stress if lights are too close.

My lights are about 16-18 inches above the plants maybe a little bit more I didnt see any taco shelling going on either

 

[Tango02]

2000 watts at 18 inches? Light stress is my guess if that is the case