i found jiffy pellets to be working good.....squeeze extras water out....i found the roots grow through the net fine but they get acidic vert fast withing 10-12 days your definity going to have to transfer within that time.....i suggest transfering the pellet into 16oz syrofoam cups after a day or two the roots should be already coming out the bottom...

16 oz should get you through the first 2 weeks....definitly dont do the 9 oz i made this mistake myself...need 2nd transplant within 10 days.