I was talking to a guy today about my seedlings there are 20 days old then measure 2 inches high about 5 inches wide he told me to pinch the top leaves? I don't understand . sos
when mine are in a cloner or aero system like that I let the plants in it get about a foot long the roots are huge at that point my mcc I did that for had 2 footer roots was nice and healthy I threw her in a 7gal and wow shes takin off no shock at all from transplant but some strains don't need topping they just need training depends but don't top anything till its like at node 6