Here are my girls on their 3rd week, exactly 21 days old, they have looked like this since I’ve gotten back (yesterday) their roots were nice and healthy to me but I’ll include a picture. I’ve fed them once with fox farm trio at 1/8 strength. Details: humidity-70%, viparspectra xs1500 pro 50% at 18in,Fox farm light warrior, ph 6.6 (tap water), temp 68(night time) to 77 (extreme, 1-2 hours)
I would get rid of the yellow leaves looks like over watering my friend them roots should be white see where roots are brown that’s from setting in water let her dry out should be ok my friend happy growing
I have transplanted them from solo cups as seen in the picture, I guess the holes need to be bigger in them next time. I just fed them aswell. I should chop the bad leaves?
Seems really low to me. I use the trio and have always fed full strength by the schedule with water only between feedings. My 1st guess would be its hungry. Probably needing calmag also at this point.
I concur, just fed them again today at 1/2 dosage, figured they were gonna die or bounce back. the leaves keep getting brown and the tips are continuing to curl, hopefully they will be alright tomorrow morning. I’ll burn some more holes in my solo cups or buy some one gallons for next harvest
Watering to much @YellowSnow need to let them dry out my friend happy growing
Thank you my friend, happy growing
I agree with @Reed71 they have that miserable looking too much water look to them. These itty bitty plants don’t use too much water and when we saturate the soil and don’t let it totally dry they get that wilting look. Heaven forbid it’s an autoflower as they can get stunned very easy and not recover in the first 20 days from over watering. The new growth definitely looks better than the old growth.
Make sure you’re checking your runoff ppms and pH to be sure your soil is in check and you’re not over or underfeeding. Seedling stage into early veg is crucial to have things dialed in properly to give the best soil environment for rooting. 
Good luck
That’s exactly what you want to see The Roots look like coming out of a solo cup. Plentiful and white
