mitchthegrower
Member
What is this?

Its in flower, its only on fan leaves and very few of them, mostly at bottom, current stage is week 6 of floweringHow about lights used, medium the plant is in and what stage is it in? Veg or flower?
Using LED lights?Its in flower, its only on fan leaves and very few of them, mostly at bottom, current stage is week 6 of flowering
No, HPSUsing LED lights?
Are you using tap water? RO?No, HPS
Di/ro water... its not my equipment or setup, it seems like it’s a disease; is it septoria?Are you using tap water? RO?
More likely a calcium deficiency.Di/ro water... its not my equipment or setup, it seems like it’s a disease; is it septoria?
Are you sure? Look, here is 2 more pics of 2 more leaves.More likely a calcium deficiency.
^ whole plant pictures are best but I don't think it's septoriaMore likely a calcium deficiency.
Will a cal mag nute fix it?^ whole plant pictures are best but I don't think it's septoria