i usually use this method if i can stick my finger in the cup about an inch down and the cup is light i water use nutes everyother watering use a drop pf superthrive every gallon and gradually up the dose of nutes watch your plant and let it tell youalright... then i am def gonna start nutes very soon since all are at second node and 1 on its third... prolly next watering... i am sorta waiting on the soil to dry a lil more before i water... prolly give em a low dose of nutes tomorrow... preciate that info homie...