yea you may want to fertilize more. they dont like much though. i fert once a week up until week 4, flush, then fert next three weeks, flush and let them go from there on plain ph balanced water 6.5. you should look into fox farm products. grow big, tiger bloom, (at local hydro store or off of the internet) and grandma's unsulphered molasses at wally world. they are good and sticky with nice weight at the end.