Mandarin XL auto - La Mandarina

You definitely have a high ppm for where she is in veg. Honestly that's the highest you ever want to push an auto. You want around 300-350ppm right now, although that damage doesn't look like a burn and more like a tear or like something was munching on it. I wouldn't spray with Neem oil unless you actually know it's thrips or gnats(gnats don't do this). It looks like physical damage but still, lower your ppm for sure and watch for pests and maybe you can see whatever if anything is munching on your lady. Hope this helps.