I don't know what's the hype about Advanced nutrients or other nutrients, about "false" marketing etc...
You don't need to use all 10 bottles from them. NPK is NPK.
I actually use Advanced nutrients, but only Sensi bloom A and B. That's one product in two bottles.
Get some Ca/Mg product (if you're in coco and under intense lights) and some PK whichever you want.
That's 4 bottles or better say 3 products. Nothing else. Simple as any other "dry powder formula".
Come inside my journals (links in signature), you'll see you don't need any other products.