Terrible looking seedlings... :(

[Bum]

Its 2 different strains, as you can see they look quite similar to eachother. They are all 9 days above ground.

Total 5 plants out of 25 are looking bad, theyre in 100% coco no feed until yesterday when i spotted this.
Was that a bad call? 250ppm Canna Coco a/b and Sensi calmag.

Looks Dry/burned and yellowing

These are major curled leaves and yellowed, dry/burned

 

[Bum]

Are they beyond recovery? Perhaps I should just pluck them and start new seeds.

I flushed the coco real good before planting to.
Perhaps I waited to long with first feed?

 

[namvet25]

How did they look before you gave them nutes?

 

[Bum]

How did they look before you gave them nutes?

Just about exactly the same.

 

[namvet25]

What kind of lights are you using and how close to plants are they

 

[Bum]

What kind of lights are you using and how close to plants are they

Oops. I forgot to add its a 250w hps. Maybe 50-60cm.

 

[namvet25]

Just dont have them to close to cause heat stress or light burn.I don't use coco but either your ph is way off or there is somthing wrong with your coco thats all i can say.

 

[Bum]

Just dont have them to close to cause heat stress or light burn.I don't use coco but either your ph is way off or there is somthing wrong with your coco thats all i can say.

How close is to close for 250w hps?

When I flushed it before planting seeds i didnt do a final water with pH water. Maybe just these were very sensitive.

 

[namvet25]

Hold your hand palm down at plants top and if you feel heat on the back of your hand move it up until you feel no heat.

 

[Bum]

Hold your hand palm down at plants top and if you feel heat on the back of your hand move it up until you feel no heat.

Yeah definately not to hot.
So what fix do you suggest?