Using fertilizer too early in growth

Hey guys, Im curious if adding worm casting liquid 2-2-1 fertilizer within say first 2-3 days of spouting up would cause the plant to stop growing. It seems as 2 of my feminized jack47 seeds has really slowed down the growth. I watered them pretty heavey the last few days, and Im wondering maybe I watered too much. My last grow, I watered the day after I wanted to and they did great, this one I think Im getting impatient.
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I dont know for sure whats wrong with your seedlings but i do know that your soil should contain enough nutrients to supply it with everything it needs for the first bit of growth and i would suggest that you dont fertalize when they are this young. Also whenever ive popped seeds I always had 1 or 2 that ended up being the redheaded stepchild of the bunch. I say just give them plain water and watch them for the next couple of days.