Hey all - I’m still super new to this and I am 3 weeks into a Blue Dream Autoflower grow and I went to drain and replace the water last night and it looks a little sick to me as one of the leaves is discolored and yellow (see the attached picture), and was hoping someone here could give me an idea on what steps to take next? Is it as simple as removing the leaf, or is there a larger issue? Is the grow doooooooomed?
Thanks in advance
Pesky