Outdoor Super Glue Grow bag seed

I've noticed my leaves doing the "taco" effect. I haven't fed her any nutes. Did some research but every single person has different opinions on that matter. My ph at watering is 7.2 Run off is 5.5? Why? My theory is heat. I live in the desert, and gets pretty dry heat even though it's a nice 65-70 degrees outside. It has no spotting or other signs of any other diseases. I'm going to start feeding her at start of week 4.