they grow out thats why i have hydroton in the main tub, i started with a drip system like mjboy, but found that was just a pain in the ass, so i went flood and drain..Now i have a bubbler i veg them in right in the 5" net pots that way at harvest i just rinse the system and put the new girls in dont even loose a day.
That was a good idea saving your good beans, your set up should work for the babies real well just easy on the nutes fisrt couple weeks..