I have pictures below to show you whats wrong, but ever since i flushed and re-nuted it been getting worse, the small dark green areas spread and the leaves started to yellow on the ends
Personally , "I" dont think you will be able to save that....but if it was somthing you really had to do , id just transplant it into new soil and dont give it any nutes untill its better , just feed it water. thats my opinion tho.
sorry but they won't be worth saving. Live and learn. Incandescents are not good, too hot and wrong kelvin scale. Use a CFL next time during the critical seedling stage.