Alright....last night I got some new soil and moved everyone into their permanent homes. When I took the jiffypots out of their plastic pots i noticed that their roots were smooshed up into the bottom of the pots. I had only cut the bottom off half the pots because i didn't know till later.
At any rate, i took the bottoms off the jiffy pots and planted them pot and all into their big, comfy new buckets o' dirt and gave them a good watering. They seem to be handling it well and don't seem to be continuing to turn yellow, but we'll see. Some of the plants also have some spotting with reddish brown spots? I'm guessing that if it was the roots or the nutes in the other soil, they should be getting better with the new dirt. We'll see.
I also put them onto 12/12. I'll put some pics up later.
Thanks to everyone for the advice and comments