The only way to know what you are having in your reservoir and what you actually need in there, is to learn about actual plant nutrition, real needs of essential and beneficial elements and trace elements first - and then
make your own nutrients.
Don't waste your time on wondering what product may be best (better) or what company may tell the truth about the benefits of common and exotic ingredients and additives. You get screwed by all of them anyway! And that is only because you can't leave being a consumer one way or the other, and hence walk into one of the traps out there anyway.
ONE truth is that plant nutrition is complex and depend on many different parameters and that the
nutrient in use is only one of them. Another is that the elements that plants REALLY need are well known and limited. Elements and additives that may improve or positively influence growth and health are even more limited. There are actually just a few that can truly be said to be scientifically proven to be beneficial.
The only ideal and optimal nutrient is the one that suits your water (is calculated according to a water analysis of your tab or well water) and is as close as possible to the range and amount of elements needed. There is no company out there, except a few that do custom nutrients for commercial uses, that can provide you with the product you actually need.
In case that for some reason you can't do your own nutrients, at least have an analysis of your water and buy the product that fits best. This would be a purely rational choice, based on best knowledge about compatibility of product X with your water.
Making your own and "perfect" nutrients isn't a child's play, but it isn't rocket science either. Most people I know of would know by now, if they would have invested that much time and energy in learning to do so, instead of inquiring endlessly for a better product, and being devoted to all the endless arguing, polemics myths and "religion" that goes with it.
Start to change your approach to the problem today, join the brotherhood of the extremist nutrient makers!
