Yellowing leaves

If the ppm you claim on your week 3 are true,then I would say it's nutrient burn!!

Just give any full fertilizer, like anything with npk and other micros. It will be fine. Care with pH or just add life to soil (bokashi) and water less if you are a fish planter.

What I believe you're looking at is a sulphur deficiency ... the yellowing starts at the base of the leaf and extends outward, correct? This is a micronutrient which won't be corrected with the addition of more grow nutes... the cause is likely a PH that is badly out of range... sulphur specifically can be absorbed by the plant if the PH is at minimum 5.5 but optimal is 6.0. Are you adjusting the PH of the water/nutes you're giving her? Have you tested the runoff to see what that PH is? This is critical to a successful grow! At bare minimum, you need to have some PH test strips that you use every time you water/feed... I've found, though, that these are really very inaccurate. I used them myself in my early grows because I couldn't afford to get a PH pen - thought my tap water was 7.0 with them but now I have a PH pen, I realize my tap water is actually 7.6!!! Scrape together the money and buy a PH pen - you won't regret it - I like Apera (cheaper than Blue Lab and probably an even better pen)... and then get your PH into a good range for your plants (6.0-6.5). This should solve your problem.... Good luck!

Hey Vexedxtoken, You can try to spray them with some leaf spray as well :) Try CANNA CURE. I'm not saying that it would fix it a 100% but it will help some. Like the other growers said, it can be a genetic problem or lack of some nutrients BUT autoflowers and pre-veg plant don't need much nutrients. You should raise your humidity to like 80-85 if you can, 53% is to low :) Good luck growing :)

You are only giving it the grow nutrient and not the rest of the base nutrients like micro and bloom. Stick to manufacturer recommendations but if its strong then dilute it down to the Ec you need.

I have had it happen also. The issue is just an unstable genetic. All seeds are not created equal. Cheers!