first grow help

how long should I wait to put seedling into hydro systems?

i was just wondering what kind of setup you have for your grow. also what kind of timing do you use for the hydro? cant you put them in after the leaves set?

I am only just starting this whole thing and nothing i have grown has ever come up this quick. on day 3 after germ I have second set of leaves and the seedlings so tall its almost lifting the top off the humidity box.. I am going to use a drip system and a dwc system have 6 seedlings to go in to them. What i need to know is how soon should i put them in there.......