I am growing Gorilla Glue autoflower for the first time. I am growing using Fox Farm Ocean Forest potting soil with Natures Living Soil mix. For lighting I am using the Spider Farmer 1000 LED. I am now at week 7 of my grow so I am starting to see pistols at the nodes. A couple of weeks ago I started to see discoloration at the fan leaf tips. I am curious if this is nutrient burn. I have added no nutrients to the grow, my soil stays at 7ph and my feeding water is at 6.3 to 6.5ph. I am also using Exhale for CO2 for my environment with temps ranging from 69F up to 79F with humidity from 38 to around 45rh. My plant now seems to be lagging a bit and want to address this, not really sure how to....too early for a flush. Any ideas???