manganese

Hi guys, this is my first grow! She is in her 3rd week of veg and some small brown have just started appearing since the last day or two! Should I be worried! I’ve done some digging around and from what I’ve found it could potentially be a magnesium or manganese deficiency! Is this so? I really...

Hi guys, I've a big trouble, maybe it's something wrong with water PH, I think it's a deficiency of Mn or Mg but it's so strage. It's my second experience, with 6 plants (3 cheese, 2 Think different and a Magnum Gom) They are 40 days old and on the biggest plants, the two Cheese, I've this...

these dark spots started showing up and the leaves are turning yellow and dying. Any idea what it might be either cal mag, salt lockout, magnesium, manganese im just all over the place