I still can't make quality product after three grows. I just don't get it!

[ActivatedAlmonds52]

So far I've grown Gorilla Glue, Sour Durban and I just put Shiva Skunk in jars a few days ago. They all SUCK. The smell is unpleasant and differs a lot from the sweet, intoxicating smell of quality weed. It's hard to describe. The high is very tiring (not in a good way) and makes me feel irritable and not much else.

I'm saying I don't get it because we're talking about three different strains that somehow all wound up the same. I've read plenty of guides and tips and my setup is fairly decent. I don't think I made any mistakes during my last grow: 250W MH air-cooled lamp (switched to HPS bulb for flower) at 16/8h and then 12/12, mylar foil, big carbon filter + inline fan, big fabric pots, everyday watering with NPK, CalMag etc. I topped and manifolded them ASAP.

What am I doing wrong? Could fertilizers be the culprit? I use BioBizz because it's cheap, but I'll definitely try another brand just to be sure. It's so frustrating, man. All this work and I don't even feel like taking two hits from a vaporizer.

 

[John Kramer]

did u JUST watering it last 2-3 weeks befor harvest ? or did u feed her ?

 

[Oscarzuma]

First thoughts:
Soil, what medium are you using?
Genetics, are you getting seed from a trusted source?
Lighting, 16 hours seems a little low for veg, most seem to use 18-24 hours on
Drying and curing, you didn't mention but are vital for taste, especially, and buzz.

 

[WeedHopper]

Yeah that ^^^^