guys i planted 3 seeds , coco and perlite , 2 look ok , but one has this green on it,pic below, ive the 3 in front of 2 7 week olds they are under a E27 led the older ones have a 300 and 400 mars leds over them temp is steady 80 humidity 55 on 18/6 all are autos cheers
You also Could be giving it too much light right now. I usually wait until it gets to about 3-4 nodes before I move it to my veg box just giving it passive light from the window
possibly the light , though its growing well.only filtered ph water. no nutes yet , the other 2 are fine
If you're PHing and haven't fed yet it looks like it's most likely to be the light. Put it somewhere with less light and check if it gets better in a few days. I've had seedlings and clones just die straight out because I gave them too much light