Patience my friend… The first step to Recovery is fixing the issue the second is recovering lol. Have faith. Even “Flops” can be valuable learning experiences, probably more so then raging successes. If they aren’t getting worse but have stalled, they might just be working on root structure, esp since they have already had a recent transplant. Keep a close eye on them for a few days, keep moisture in there. Maybe even a little more moisture now that your cups have sufficient drainage. I don’t think they should ever be bone dry at this stage, I’d double mist the soil and double mist the dome but my favourite learning method is trial, error and being vigilant on observations 
Here is the trio right before the end of the day - my morning (they run from 3 PM to 9 AM).
Number 1 and Number 2 look essentially the same, but now #5’s leaves have drooped. WTF!?
I just gave them a little bit of water (you can see in the pics), like four or five drops from a eye dropper. I also put a trail of drops (4 or 5) to the edge of the cup. I did this so that if they are dry they can get some moisture from one side and if they are wet the other side would be dry and give them oxygen.
By the way, to make sure it wasn’t bad water, I have used nothing but distilled water since the transplant.
I AM SO FRUSTRATED!
Forgot to mention, I also raised the light up to about 28" from about 22". It is only a 300W LED.
@bob31 @Powaforce Bob31, I would appreciate your thoughts. I think Powaforce has given me great advice, but I would still appreciate your thoughts. Right now I think they actually look a little worse. For sure they are not growing.
Here is the answer to your additional questions from my ticket.
Soil is regular organic potting soil mixed with 25% perlite. Soil Ph was approximately 6.5 when I put it in the pots.
Water is tap water. The water has been treated with Up/Down to get 6.5Ph and it has sat out to evaporate chlorine. No nutes ever. UPDATE: since the transplant almost no water, but water I have used has been distilled.
The picture doesn’t show it for some reason, but there are five larger holes in the base and five larger holes on the side at the base. The sides are riddled with tack size holes. UPDATE: Added more even larger holes (see above).
Temperature has been high 60s at night and upper middle 70s during the day.
Getting closer to death.
Number 1
Number 2
Number 5
As you can see in the pics, Number 1 and Number 2 are turning lighter in color and the cotyledons continue to die. They just don’t look good.
Number 5, the one that was seeded later and did not experience the large pots for long and that looked the best, has taken the largest turn for the worse. Its leaves have turned almost straight down and its once dark green color is also starting to lighten slightly.
No nutes ever, fresh and neutral soil, water ph at 6.5/6.6, and in totally aerated pots for a few days. Still they are dying.
This is tough. You seem to be doing everything right. How tightly is the soil packed around your plants? I am trying to think about all aspects, and I am reaching for a solution. You don’t want the soil packed tight. I think they could stand to be a tad warmer…I read for seedlings you can be 80-85% air temp. That is all I can offer you.
Get the domed up clear plastic anything. Spray inside of dome and lightly on plant and soil. The pots don’t need watering.
Are you sure that potting soil or the perlite didn’t contain fertilizer?
Those babies looked over nutrients and over watered.
They have no ability to uptake water until their roots develope and the need high seventies and humid!
I asked you to do this ,4 days ago brother you must have missed it
I only left the clear dome off the first day after transplant to let them dry. Since then they have been covered. That is why the clear cups are there. I just removed them to take the pics.
I did add a few eye drops of water twice because the soil is very, very dry as posted.
@bob31 See soil info above
The cotyledons are supposed to die off. That is how you know they has used up their internal foos supply., but I am new to growing. @70sChick @bob31 @Smokin_ernie @Donaldj…sorry guys, I just tagged in random people who can give this problem a good look-over, or ask in someone you think can. The simple solution is not working for them…also to note they have been living in upper 60’s temp at night.
Also, do you have the three of these under 2 300 watt LED’s? If I read that correctly, they do not require that much light. That will be nice later, but not now.
Don’t give up on them yet…they still have a lot of fight left.
Not coming to step on toes
First off if they are dry water very simple concept fill a cup with soil feel the weight dry and compare if your ladies seem light give them a bit of water.
Keep temps in the 70’s seedlings are far more sensitive to cold and the warmth will let moisture from soil raise RH under covers
The soil you are using will work fine be patient give them some moisture keep them cozy and see what happens they certainly do not need nutrients at this point
@Tr33
They were under two lights when in the large pots because they were so far apart. Since I transplanted them into the small pots they have been under one light, now about 28" away in order to not light stress them.
You’re good brother I have a full plate. Thanks for jumping in!
can I tell you what I think the overall problem is? That soil. Un fertilized soils do not list NPK on the labels.
Go to your local store and buy some organic potting soil with perlite. (No fertilizers)
And my apologies on the dome thing. I was trying to do to much this afternoon and I got rushed. @Medforme
And FYI in is not normal for the cotyledons to die off when a plant has just sprouted.
Lol I have pulled some of mine back from far worse starts and oddly tested ppm on my promix today was 1100 which ironically I used to start my PK CR and WW they certainly took longer. Mind you I was in no rush to speed them up any so didn’t test soil or care they started slow 
I could see the frustration it would cause if they were only seeds and no other plants growing.
I don’t see the low NPK being much more than a slow start as ladies adjust but could also flush solo cups easy enough and with temps as high as in picture the soil would dry again pretty fast
Yeah, I know it’s low, but some plants are just crazy sensitive! Good idea in flushing them some, probably easier than getting new soil. @Donaldj
wow 1100 is higher than i would expect from the promix!