Six Shooter

Ph should be fine at 6.5.check the pH of your soil too. Some could be very alkaline and cannabis prefers acidic soil. Your humidity is far too low, the reasons the leaves are clawing up is because they are looking to trap moisture, you can cover them with a plastic dome and spray inside. Make sure you look under the leaves sometimes this can mean little insects are attacking. Are you hitting the leaves when you're watering, light can magnify this and make these marks. Hope this helps. 🌱👍😊