Substitute for liquid hydroponic nutrient solutions

I like blue plant elite set. Has been working well and goes a long ways.

Both Bio Vega and Bio Flores by Bio Canna and Flora Nova Grow one part and Flora Nova Bloom one part by GHE are all highly concentrated, needing very little actual solution to be used and one bottle of any of these will be enough for many, many plants or multiple grows. All are highly recommendable. Another to consider is Organic Grow and Organic Bloom by BAC, again very concentrated and lasting for multiple plants/crops. Another good thing about these products are that they are all "one bottle wonders" meaning there is no need to buy anything extra or mix bottle A with bottle B or bottle B and C, making their use super simple, a handy thing for new growers. They all work superbly well and are all super healthy, with no chemical residues or other unfriendly substances. Otherwise you could buy raw chemicals to make your own mixes and with a degree in chemistry and a lot of experimentation, you might find something that works just as well as the store bought products. This is where the costs come in - research and development. A bit like cars/automobiles, there may only be 10,000 dollars of raw products in a car, but the car costs you 75,000 dollars because the real cost is not in making the car, it is in all the development, prototypes, crash testing etc that eats up all the money. And lets face it, you don't really grow cannabis to save money, although this can occur, to me it is all about total quality control and saying "I made that with my own hands!" Hope this helps, Organoman.

Let assume 10 or 20% of one liter Hesi Hydro Growth are actually nutrients, that you mean we pay 10€ for only 100 to 200g pure nutrients. 100€ per kg of a basis compound seems to be very good business for the producers so to say. If that would be a realistic price for fertilizer, food prices would surely be multiple times higher as much of our food is grown in hydroponics 😒 So, how to cut costs and actually have more control about the amount of nutrients added? Any good alternative sources like as a powder or such out there?