High humidity or Light Intensity

What's this look like to you guys

Heat stress

^ I'll second that opinion. Just add it can be a heat or too little humidity combo.

Bugeye said:

^ I'll second that opinion. Just add it can be a heat or too little humidity combo.

Click to expand...

^^ what Bugeye said.
How close are the lights?
Today I noticed that I've got some taco and need to raise my lights.

Heat stress, they Taco in an attempt to trap moisture.

Moved lights about 16" away 600 watt HPS my hygrometer just broke I'm going to lowes to get a new one right now. The plants farther away from the light aren't doing either taco or curl that's why I didn't think it was RH.

How close was light before you moved it?