Im just going to leave this here as my 2 cents lol. Im not the one in the video but its a source I respect and his results speak for themselves. In my personal opinion, all those additives and other crap are unnecessary. All you need is a balanced 20-10-20 nutrient line with a bit of extra phosphorus during flower and youre golden. Everything after that is based on your environment. Temp, vpd, airflow, lighting etc. Feeding plants is easy and doesnt require super complex mixtures and additives to get right. Whats not easy at times is is controlling your environment. You get that down and it wont really matter what medium or nutrients you use, so long as its a balanced nutrient.