I think I have some sort of nutrient deficiency, but I'm not sure what?

I gave them some of the OSmocote Veggie and Flower 14-14-14 sometime last month, so I stopped watering them with the water soluble stuff and these problems started to appear. I didn't really measure how much I gave them, I just shook it on til I thought was good enough.

Should I water them with my water soluble stuff while using the slow release?

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