Over or under fertilized: Auto Daiquiri Lime Dutch Passion

Hey Growmie, From the look of those leaves and your feeding schedule, it seems more like a deficiency issue rather than over-fertilization. You're using BioBizz Light Mix, which doesn't have a strong nutrient charge, and by day 41, your plant is likely asking for more than it's been getting, especially since autos tend to move fast once they hit the flowering stretch. The yellowing and browning on lower leaves looks like early nitrogen and magnesium deficiency, possibly with some bloom nutrient demand kicking in as well. Your feeding amounts have been on the lighter side, and while that’s usually safe with autos, she may be running on empty by now. I’d recommend checking your runoff pH if possible to make sure it’s not dropping too low and locking out nutrients. You may also want to slightly increase your Bloom and TopMax next feed and consider adding a bit of Cal-Mag if you're using RO or soft tap water. If the new growth is still coming in healthy and this is mostly affecting older fan leaves, it’s a good sign she's still got potential to bounce back with a balanced bloom feed. Let me know how she’s looking in a few days.