Some of them can work, but are totally not essential to the growing process. You can get perfectly hard dense nugs if you grow the plant correctly. I would recommend as stated above you doing some research into the "lucas" forumula. The only thing I would sugest you do that they do not is make sure to change your resivour at leat once every 14 days. Other than that it will give you a great idea on how pot plants react to your green thumb, Once you have a basic understanding of how they are going grow under your care.
I will give you an analogy, if you are going to learn calculus you first have to learn algebra and get a basic understand of how mathematics work and the basic rules like PEMDAS because without it nothing else will make sense. It is the same way with growing, until you understand how NPK and pH work it is not really of concern about bud harderners or flavor enhancers etc. Do me a favor and let me know what your nutrients have in them. A list of all the ingredients and the NPK ratio, I will let you know what to use and what not to be worried with. I promise if you listen to the advice given here on AFN you will grow some super dank weed.