STOP the nutes, this part of the grow is the hardest and you need to treat new plants like queens, no nutes for 3 weeks, just use plain water for now.

keep it nice and humid during the seedling stage(mist them) and cut back once they can thrive on thier own, im not a hydro guy i grow in soil but taken what i know i would think it also pertains to hydro.

as for nutes, when the PLANTS are ready give them only 1/4 of what the directions state per gallon.