Yellowing issue

[Covertgrower]

@MidwestGuy

iron deficiency.

I have to agree after a rough search of some other examples. Here’s the first one I found, but there are others:

Iron Deficiency Color Chart

[share] Hey everyone, hope the community here finds this deficiency chart useful. I wrote a guide about how to fix an iron deficiency in cannabis, along with this chart and pictures. The biggest problem of iron deficiency is that it can be tricky to identify. Growers often confuse the lack of iron to other deficiencies such as magnesium, zinc, or nitrogen. Yet iron deficiency signs and symptoms are quite unique. First, upper leaves will begin to lose color starting at the base of the leaf …