Leaf Spot

Hey all, so I’ve had a couple of seedlings turn yellow/brown over time just wondering what would cause this? Starts with small spots and eventually takes over the leaf.

Light feeding in coco, although it still came on to prior seedlings before feeding started

I appreciate any input

Dude nute burn!! Your ‘light’ feeding isn’t a light as you think, stop the nutes! Or at least a hell of a lot less, doesn’t look good man. It may pull through though, new growth should be good if you slow down on nutes big time!

What are you feeding/how much?

i have had true leaves look like tnat and it will grow out of it do not worry

Cheers guys flushed a few times with phd water and alls well I’ll have get a ppm pen to check my nutes