Nutrient burn from no nutrients?

It’s not holes in the leaves in worried about, it’s the edges that are getting burnt from some sort of nutrient issue. I just can’t seem to think of what it could be since it’s only fox farm and no additives.

What the 8thchevron said too . He's right there . I always avoid spraying plants unless there's a problem and you need a quick fix. Lights can burn the leaves when they're wet . Good point by the 8thchevron.

Could be a pottasium, magnesium or calcium defiency for me. Its hard to tell under the blurple light. First thing is to check your PH . incorrect pH will not allow certain nutrients to be uptaken by the plant (lockout) . As you're using fox farms (I use soilless) I'm guessing you have all the nutes in the soil that you need . So my guess is the PH of your water maybe off . If that's all fine then I'm not sure. Just add some calmag lol good luck and happy growing 🌱

Looks like you're overwatering and also getting the leaves wet. Water on the leaves will act like a magnifying glass under lights and will burn your leaves. The only time to get the leaves wet is if your humidity is too low or you have a nutrient deficiency to correct quickly. Let her dry up before watering again and if you must get the leaves wet, do it during dark hours.