Nutrient burn?

hi.. as mentioned before, it's best if you don't give any nutrients for the first week to 10 days or so, and even later it depends on the growing medium you're using.. many soils are pre-fertilized, so then it's not really necessary, to feed extra, as the seed itself has sufficient nutrients for the plants to survive the beginning.. the new growth, when it comes out, will always be a bit lighter green, that's normal, and also the typical "yellowing" which would indicate a nitrogen deficiency happens on old leaves first, but definitely not yet at this phase.. i would be very careful and now first go with water and nothing else for a little while.. if you have an EC meter, then you could try to measure the run-off of the water to see what EC value it has, and whether a flush is required, but this would risk overwatering her at this stage, so unless you have an EC meter i wouldn't overwater her now..

Hi. Erstmal gar keine Düngemittel geben. Nur Wasser in den ersten 14tagen... Danach kannst langsam anfangen zu düngen. Für ca. 14 Tage hat der Samen alles was er braucht und in der Erde sind ja auch Nährstoffe aller Art.

The leaves later in the plants development being a light green could indicate too little nitrogen, but I doubt that's the issue here at this early stage. I would be able to give more detailed advice if I knew more about the mix/grow medium, so you are welcome to message me the details and I can give you hand sorting it out! My broad advice would be to go light on the nutrients (.6ec with a complete nutrient and a little Cal mag maybe) and really get your PH dialed (5.8-6.2 would be a good range). The newest growth is looking ok, so it may already be on the right track.

But they are already turning lime green, doesn’t that mean they are lacking nutrients?

don't feed seedlings first 7-14 days. even then, if in soil, you likely have nutrients for a while after that too. since it burned.. give it more time. allow it to show a slight fade or slowdown in growth before you resume a fertilization schedule.