They sound stressed and they are very young...too much, too fast...First three weeks my clones and seedlings get nothing but rainwater and relatively weak light. One must be patient while they get going. Youngsters stressed like that don't recover instantly...give them time and be gentle on nutrients until they get good roots and leaves going. But they may stay stunted and slow now. What you did is like giving a 2 month old baby a T-bone steak, salad, loaded baked potato, and cheesecake for dessert and expecting no problems with the kid eating it all!