Nute burn? Wacky PH? Nute Lock? *HQ PICS*

Good morning RIU!

I started noticing trouble with this plant on 9/30 and thought nothing of it at first.. it quickly started progressing when I thought maybe it was nute lock. Yesterday I fed 2 tsp grow big, and 2 tsp big bloom thinking maybe it would help.. I woke up this morning and it looks horrific!

9/30 Pictures
http://i.imgur.com/78e4a.jpg
http://i.imgur.com/l7GUK.jpg

10/06 Pictures
http://i.imgur.com/P70VX.jpg
http://i.imgur.com/8LkbA.jpg

Notes:
Age: 3 weeks old
Lighting: 90w UFO w/ built in fans (24-7 Lighting)
Temp: ~75 degrees Fahrenheit
Fan: Yes
Soil: Miracle Grow potting mix

What could this be from? I have a bunch of 1 week old babies and I would like to avoid this problem from happening again.

too young to feed. i think ya just over-watered. stop with the ferts and let it dry out. MG has ferts already. don't feed until flower, except for minerals. imo

Agreed, too early to be fertilizing them. What do you mean you gave them 2 tsp? Did you mix them with water? Were you following dosage directions?

yep as all ready said, to young, way to young, that is small seedlings, don't demand much nuts so early in there live both Bc. the fact that they are small but also at the stages they are in, flowering and specially the two fist weeks is where you need to add the most nuts, now they have plenty in there soil, try not to over do it, keep it simple, its easy to love em to dead, less is more ...

Thank you everyone for the replies.. I was following a feeding schedule that I read online.. I added the 2 tsp to 1 gallon of water.

What was happening on 9/30 when this whole thing started? I didn't feed at that point and it looked pretty awful before I started feeding.

What could the underlying cause be? Over watering?

I just realized this feeding schedule starts at flowering weeks!?!?!

https://www.rollitup.org/general-marijuana-growing/164183-fox-farm-feeding-schedule.html

DOH