Yellow leaves

So I glanced at your diary and you are growing in living soil that you amended with more nutrients. Cut back on how much you are watering and stop the calmag. Only would you add calmag at every watering would be if you were growing hydroponically or in coco coir. In soil you would only need to add a calmag supplement two to three times the entire grow. Ph’d water then start with some observational fixes. They may need nothing else but what’s in the soil.

Hey there it’s 100% over watering. Make sure to let the soil get completely dry like way drier than you think it should be b4 you water again you will see the plant bounce back then after a few days of really thriving it won’t perk up in the afternoon then that day right b4 lights out water it till about little bit of water runs out the bottom

The leaf itself looks fine the light is probably too bright or too close and is burning the leaf. Also check humidity level if it’s in the 40s to 50 range it might be too dry