Let's address this because I think it's important. I think there is definitely a difference between light burn, light stress and light bleaching, based on temperatures and light intensities. As far as deficiencies go I feel like people try to over simplify deficiencies thinking its just one when in reality its usually several as well as some kind of environmental/soil factor creating the the deficiency, depending on the soil medium and nutrient regimen. With the exception of maybe cal/mag, which is usually caused by soil chemistry or lack of bio availability
Iron is responsible for chlorophyll production and I notice a general lighting in the veins and leaf tissue. This is what iron deficiency commonly looks like for me in my garden.
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