HELP! Anyone knows what's happening here?

[Preston12]

These began growing well until day 7-9 when I first noticed some leaves turning yellow. I transplanted them to those big containers, the substrate is a mix of Roots Organics Original soil mix, worm castings, amended with RO Uprising Grow and Bloom and roots organics Elemental. The seedlings were planted first on the same soil from the past plant I had. It was on the outside for about 3 weeks (maybe caught some fungus or plague there??). I applied some neem oil when I transplanted it to those big containers, on the soil and leaves, but it hasn't improved anything.

Anyone had a similar problem?? how did you fix it??

 

[ChadWestport]

I've clicked your thread twice now... but I'm honestly stumped here, sorry. Maybe it will come to me

 

[D.A.A.S.69]

Could be maybe the old soil was bad,idk.
But other then those few leaves don't look good, looks pretty healthy to me, an will grow out of it, when them roots get in good rich soil, time will tell I reckon.
GoodLuck

 

[Preston12]

Thanks D.A.A.S.69 .69 and ChadWestport
I guess I'll let it grow a lil bit and see how it goes. Hopelly they will make it

 

[Tersky]

Only thing i can think of would be maybe a root or ph issue but it could also just be bad genetics.