Ph is outta whack and possible some tripps sucking on the underside of your leaves. Grab a loupe or a scope check it out. Get your ph in line. Foliar feed also
Is it just that one leaf? Sometimes those bottom first leaves to pop can be touchy I wouldn't worry to much about it unless t is on more leaves I do believe your PH is low tho try raising it if rest of plant looks fine eve after uv adjusted your ph and nutrient intake and check for bugs as well then just pluck it off lol
Is it just that one leaf? Sometimes those bottom first leaves to pop can be touchy I wouldn't worry to much about it unless t is on more leaves I do believe your PH is low tho try raising it if rest of plant looks fine eve after uv adjusted your ph and nutrient intake and check for bugs as well then just pluck it off lol
It also looks as thosthe water u are using might be a lil hard do to some mineral deposits starting to coat the leaf or at least that's what it looks like