Rapid Rooter Horror

Hi all,
I had a tray of rapid rooter seedlings in the shed. all plants were doing great. One night , I watered them and removed the humidity dome. Well! almost all of them did a sudden wilt and never returned to health. (they died)
I am trying to figure out what was the cause?

Overwatering?
Heat?
Sudden loss of humidity dome?
Roots sucking the life out of the plant
ph imbalance

I just dont want this to happen again.

Also there is another rapid rooter set up. All still healthy

All the other plants are healthy

The Diesel was the first to go followed by the Ice and Early Misty



jamrock
I have vents and two fans circulating air. Also I am only blocks from the beach (temps does not get super hot)

I'd say it was a sudden loss of humidity and they just coudn't keep up....or a combo of the fans and the loss of humidity. I would nix the fans in my clone area unless it was sucking air out...

FWIW... I usually set my dome slightly ajar for a night..then a bit more the next night...then take it off.

If something wilts next time..try placing a clear plastic drinking cup over it immediately for a day or so..then take that off slowly.

bt dt

Try using an anti wilt product also.

I am a noob. What is an anti wilt product?

jamrock