Nutrient burn? Gnats aftermath?

Looks like nutrient deficiency. Most likely caused from nutrient lockout. Check your soil pH. Your runoff water. Make sure it's in range. If so completely flush your medium and make sure your feeding enough nutes. A ppm meter would be handy. Good growing

Hi—- your ph is on point if that pen has been calibrated. You will not be able to reverse any damage—- all new growth will look better though. Clones also go through this yellowing a lot—- they need high PK numbers when they are forming roots. I would give her a flush with 6.0 water and SLF-100 to clean the salt out with 15% run off. Then go back to a good veg schedule, cal mag, and microbes. The new growth will look good! ✌️🏻💚🌿💨

Unfortunately when leaves get damaged like this, there’s no way to make them green again. You can however correct the issue and keep it from spreading. Your feedings are not showing any calmag additions, and since you are growing both in coco- and under high powered led lights- your plant is probably in nutrient lockout due to lack of magnesium (which powers chlorophyll production). 🌱

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