Grrr - problems with tomato seedlings

[so lucky]

catjak1975, that's great info about the H2O2. Thank you for the detailed post.:bouquet

 

[silkiechicken]

Did you start hardening them off? That happens to some of my starts when I harden them too fast and the first tender leaves get a bit windburned and crispy.

 

[curly_kate]

Nope, today was their first day outside, and I kept them in the shade.

 

[curly_kate]

Well, whatever it was, it stopped. I very unscientifically tried all of the suggestions, and my tomatoes are looking great! I did the peroxide solution, fertilized & moved them all outside (taking advantage of the weirdly warm temperatures). So thanks for all of the advice!