Well, ye, of course.
It goes hand in hand with underfeeding.
You need core things to happen with your plant.
Co2, lights and nutrients. It's a fine thin line where you can either be over or under.
Generally what you see on a brands ml dose and all that you wanna go under as a rule of thumb or just to make sure you don't burn your ladies.
I always say, a little def is better than a full blow tox or nutrient lock.
As for the lots of nutrients I think I can be acussed of being a newbie and buying into pics on bottles and all these fancy nutrients that places like Advanced Nutrients sell. Ye, I got roped into buying the full 14 starter pack. When in reality I would of only needed 5-8 of them nutrients and 4 of them were the grow/bloom A+B and voodoo juice and big bud & bud candy. Or you can just do it a simpler way. The organic way.
Buy a few biotabs and put in your sub and grow in easy style.
I have done a supersoil grow.
So really, very little trouble and tasty weed.
You'll hear about not flushing and those who flush. If you are going organic you really don't need to.
But with all the synthetic Nutrients I feel you have to flush or at best cut your nutrient the week of and just let her finish up eating what's left in the soil. It is a balance and you'll find it. Go with something easy to start off with A Grow, Bloom µ or a biotab and some light mix soil.
Or some ppl like to flush fast and hard, or not at all. Really down to pref and if you are curing your weed you will get chemical cough as I call it if you leave heavy metals in your weed, but again down to pref, me personally I don't like heavy metals with my bud.
Good luck.