La con seedlings looking really unhealthy atm

Hello

The plant i'm growing is La Confidential, from dna genetics.
I germinated seeds about two weeks ago, four of which sprouted immediately, and two that was duds.
Transplanted the four into rockwool-cubes. On two of them the taproots showed up in 24-36 hours after transplant to rockwool.
The ones that I could see the taproot on I transplanted to pots with gold label special mix soil. They are looking healthy atm.
The other two however didn't show taproots at all. Two or three days went by without any roots showing up, and I decided to plant them in soil anyway.
Now after four or five days they are starting to look quite unhealthy. Or rather, they´ve been looking real shitty ever since transplant, no new growth at all and the leaves are yellowing and dying..

I just gave them a thourough rinse with water adjusted to ph 6.4-6.5 (my tap water has a ppm of about 45, nothing) and the run off came out at ph 6.1 but a ppm of 1480 (!!!), so the soil is obviously hot as fuck (thanks for letting me know that Gold label!).
I hav'nt added any nutes whatsoever but i hit them with a microscopic ammount of Voodoo juice and carboload a few days after transplant (we´re talking a drop or two in over a gallon, 4 litres.
The first two seem to love it though.

They are growing in 11 litre pots with a few hydrocorrels at the bottom under just a few low powered t5´s.

I know La con is supposed to be a slow in veg, but this is ridiculous..

These plants are being grown to be motherplants for my ebb and flow SOG (grow journal starts later tonight or possibly tomorrow)

This is pictures from yesterday



And these are from today


Any ideas on how to save them, or do you think they are screwed?
Would appreciate any help or advice!
Peace!

In comparison, these are the other two:

Should I try to dig them out, place them in just rockwool and flush them?

The combination of a drenched rw cube in thick soil is a recipe for an overwatering disaster, which is happening here, all is not lost i think. Reduce watering and wait till medium and cube is much more dry before giving it a watering again. Next time start in a jiffy pot or a small pot with seed raising mix ,not a rw cube.

No, dont dig them up, once you destroy the little tiny micro root fibers, your seedlings will die.
Best thing to do is, water with a compost tea and make sure not to over-water them.

Thanks a bunch guys, really appreciate it!
I´ll just stay put and keep my fingers crossed.
I have a couple more seeds sprouted so in a worst case scenario i still have 4-5 plants to choose a mother from.