Looks like magnesium deficiency on the top. How often are you watering and what is the pH your putting in and possibly the pH of the medium if you can test that? Are you using cal-mag? If not I'd suggest adding some. Is that a coco based medium?
@chris.booras0 if I'm understanding their web page that medium is soil based and your input should be 6.4-6.7 pH. Mid to upper 5s is Coco based mediums.
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Looks like magnesium deficiency on the top. How often are you watering and what is the pH your putting in and possibly the pH of the medium if you can test that? Are you using cal-mag? If not I'd suggest adding some. Is that a coco based medium?