Mixing your own nutrients

Curious how many people have had success mixing their own synthetic nutrients? I've used GH flora trio, Fox Farm (in soil), and AN Sensi combo and all seem to have deficiencies in some way or another. Would love to be able to dial in a custom feed chart dependent on the plant needs but it's impossible to do so with pre mixed solutions. Any advice, tips, or formulas you use?

I run aeroponics so I'm looking specifically for fully water soluble mixtures.

Try doing a little searching maybe? There's huge long threads about that stuff in here if you look.