Have no idea what the "crap" you refer to is or even what Bonnie little green jug is. If it is a fertilizer it sure isn't a commonly used one. But the problem isn't the fertilizers but applying it to seedlings as you did.

Plants need feeding, seedlings need little to none and when given some it has to be very well diluted down from full strength.

Odds are it will recover in time tho you may lose those leaves. Flush the container out with pure water to force most of it to drain out of the pot.

Dave

The damage you see is a minor amount of fertilizer burn.