Yellowing on older leaves 3rd wk flowering

davillains

Well-Known Member
Soil (biobizz lightmix), DynaGro Foliage Pro every watering (4-5days) 1ml on 1.5lt (that's about half strength).
I noticed yellowing on my older big fan leaves, thought it was a little deficiency so I added calmag (3ml on 1.5lt - full strength) .. but I probably messed up because they seem nute burned now...

The older fan leaves seem to act as a buffer and absorb my inexperience ....I don't see other leaves affected much...

What do you think ?
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