If your using a good soil you don't need to nute the seedlings till they are 4 or 5 nodes high even then, a good soil almost needs no nutes regular water 2 times then a bit of nutes 3rd water cycle I water every other day
Growing 3 Viva sativa 1 white widdow bubba kush hybrid 1 honey suckle and 2 northern lights just put them in the dirt yesterday! Using 600 w LED for veg stage and have an HPS 1k light for flower will post pics as they grooooww