yes ...you will need to transplant after about 3 weeks...I use no nutes the first weeks...but, do use a root stimulator at transplant time

I go from 16oz cups to 6-8 inch pots after 3 weeks...to 3 gallons pots after the plants show their sex...under the 12/12 light cycle..(no sense transplanting males?)

weak stems are common...I start seeds in cups 2/3's full and add soil around the stem, later as needed