So today is Day 15. I still can't find out whats wrong with them. They have a weird wilt where it's less of a wilt and more of the leaves just turning downward. Some of the plants are also yellowing, especially the bottom leaves.
As of yesterday, I transplanted them just to switch the soil up and see if they respond. It's a pretty hot mix so i figured they're either going to respond well or get burnt to a crisp. Im using DankFranks bed soil mix linked here (its at the bottom of the first page of the thread):
I was very surprised to see they all had well established root systems for 2 weeks in the 4 inch pots which leads me to believe the soil isn't the problem.
I initially turned my CO2 down but got no results so as of yesterday I turned it completely off. I also added an intake and outtake to exchange the air in the room 4 times a day. I read some people having problems with CO2 running need air exchange. Kind of debated but i figured it can't hurt and now ill have a backup incase my mini split dies.
As i mentioned earlier Im not an expert grower but im not new. This is the first grow in a new room and i have just never encountered a problem like this. Here are more recent pics of whats going on...