hi i hav been using canna a+b in coco for a while before that i was using ionic grow an bloom but both seem to lack something in flower so am wonderin if anyone can recomend so good feeds to look at was thinking hesi or vitalink unless anyone nos any other good one plus wot ones should i buy there seems to b loads in there ranges now the seller in local hydro shop asways says a A+B mix is always best but am not sure so any help b grateful just that my feed am using has been lacking in nitrogen aswell