Hi is this a Zinc deficiency? If so how do I fix it? If not, then what is it? This is off a 7 week old Maui that's in DWC Bubbler using Cyco nutrients for grow because I'm a noob. All the older fan top fan leaves are turning this exact way. I see no spots just deep yellowing. Was hoping to start my bloom this week, but I want her healthy. Is this a good nutrient system for DWC or what is some of your recommendations? Cheaper is better but I'm down for whatever. Any help would be greatly appreciated
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