fert 1 week seedling?

i woke up today and notice some of my 1 week old seedling leaves are turning yellow at the tip. i have 4 things that come to mind as to why 1. fed it molasses yesterday 2. heat stress 3. over watering 4. need nitrogen. i heard that when leaves turn yellow mean its low on nitrogen so i went out and bought the alaskan fish fertilizer 5-1-1. juss wondering is it too young to feed it fertilizer? also what are the signs when a seedling is over water or heat stress? thanks

some pics would be nice and no feeding ferts at 1 week would probably kills ur baby wait a lil bit it might be heat stress what the temp??? wat kind of soil are u using???

NMG is a hundred precent right on that one and if its a Nitrogen Defficency Tomato plant food miracle grow will fix a N def dont use alot half the recomended dose then half that. should fix it right up it atleast worked for me on my seedling and fair warning miracle grow will also kill the fuck out of ur plants. Happy Growing
K5