Any advice on what this could be?

The bottom leaf (first true leaves) edges of my seedlings are turning light green/yellow and the tips are curling..it seems like the leaves are dying and working it's way up...any idea on what's causing this?
Thanks

alphapinene said:

View attachment 4135021 View attachment 4135022 View attachment 4135023 View attachment 4135024 The bottom leaf (first true leaves) edges of my seedlings are turning light green/yellow and the tips are curling..it seems like the leaves are dying and working it's way up...any idea on what's causing this?
Thanks

Click to expand...

Poor medium

Fuck!! I was hoping it wasn't that I'm doing things differently this grow (coots super soil instead of roots organics soil/dry nute regimen) and am using plastic pots instead of fabric...that's deff it ...will these survive? Should I just transplant them into fabric pots filled with roots organics soil? Or just poke some more holes in the pots for better airflow?

So i decided i'm just gonna transplant all plants out of the shit plastic containers and into some 3 gallon fabric pots + add alot more perlite + give em some aact.. even tho they don't need to be transplanted yet ..hopefully this fixes the problem...I mean I followed coots recipe to a tee..the pots been moist but not wet for 5-6 days now

I'm thinkin the 3/8" pumice may be the culprit..