i would touch them with any ferts/nutes for atleast another 2-3 weeks man and even then start of with 1/4 dosage, id invest in some rooting/transplanting products they work good when u add alittle to every water.
Don't give them any nutes until they reach at least three weeks of age, or begin showing a deficiency - whichever happens first. (Usually three weeks).
I use liquid seaweed for germinating seeds. Works great. It's a weak but good organic fert. Gets your plants off to a great start without burning them. Stay away from chemical ferts for the first couple of weeks.