Ahhh yeah sorry that info might be helpful, I have 3 Maui Wowie plants (the one that’s in the pictures of the original post) and 3 Hindu Kush plants but only one of the Hindu Kush plants seems to be affected but at less of an amount (the picture included in this post), ohh and there all feminized seads. I have them growing in FoxFarm ocean forest potting soil mix and I’ve been watering them about every other day when the top inch or so of soil seems dry with only water from the start and I converted over to watering with nutrients last week thinking that’s why the plants are still so small (planted in soil 9/2/21), now that I’m thinking about it I believe the plant was showing this yellow burntish marks before I even started the nutrients. I’ve only gone threw 1 gallon of nutrient mixed water over the last week between the plants, never enough to have any water run off because I’ve been afraid of over watering so I’m not sure of the PH at that stage. The 1 gallon of nutrient mixed water that I used had a PH of 6.57 and a PPM of 0331 using Blue Planet nutrients Blue Max part A+B and Botanicare CAL-MAG pulse all at half the recommended starting dose. And as far as the lighting I have two VIVOSUN vs1000 led grow lights 24inches above the plants, and as mentioned before I messed up and had the lights on the wrong settings. 9/2 threw 9/14 they were on 25%, 9/14 threw 9/21 they were at 75% and after 9/21 on I’ve had them at 100% and the whole time they’ve been on a 18/6 light cycle.