i only water the 6 inch rockwool around the plant im not sure if they whole block should be wet or moist. also when should i be putting these into my hydro system they are about 2 weeks from being planted in the one inch rockwool. once they had stem coming out of the bottom i tranported them into the 6 inch rockwool. also when can i start using nutrients for the plants in the soil and the ones that will be going into my hydro system. and when should i put them in my hydro system??? answers and suggestions are appreciated thanks.