This week the bigger fan leaves has started to yellow and get dark spots on some. I turned the second light a week ago and I'm thinking about some burning or some type of deficiency but I have been using my nutrient schedule for a while now and the dont show deficiency. I turned the potency of the bigger light to 50% dimmed like 3 days ago, plus I double the dose of nutrients this week to see how they respond. Let me know what you think this yellowing and spots are.