alot of growers get sold at the grow store on products and feeding schedule.
this is exactly why we should all do our own research on the products we think we need/want. i mean of course, the dudes at the shops want to make as much $ as they can, so yeah, some of them might knowingly direct someone who seems to not know too much to the most expensive products. if you go into a shop knowing a little about the products your looking for, your already a step ahead of the guy at the counter. also, pick their brains a little bit. see what kind of nutrients they use, etc. the next few times you go in, ask a couple of the same questions. if you get different answers, chances are, their bullshitting you and may not know as much as they should and are trying to get you to buy more expensive products. its your brain........ think for yourself