Diesel Auto

I noticed I had some brown spots appear on some leaves. I moved the light to 30 inches away and I have not noticed the spots getting worse. Depending on the day Diesel or Critical is the bigger plant. It is very interesting to see the growth that happens seemingly overnight. I kept the seedlings watered as needed making sure that I wasn't over watering them. I have them on a 18/6 light schedule with the light turning off between noon and 6 pm. I moved them to a 5 gallon cloth pot all on 5/20. For the soil I am using Fox Farms Ocean Forest potting soil on the bottom half, the next quarter I used Whitney Farms organic potting soil and the top quarter is Coco-Loco potting mix. I also lightly blended the soils where they met.