I'm not a fan of feed charts. If it is a manufactures chart hell yea they want you to get all that stuff. Actually I don't even pay any attention to them! I went down that road when I started growing inside, with lots of forks in the road.
I generally follow them to the letter and if they dont preform well I dont use them again. In Hydro I have always feed General Hydroponics at full strength unless I was using the Fox Farm soluble trio then I cut back, I feed Jacks 321 at full strength.
That one doesnt tell you the PPM so I have issues with that but I dont do organics either so it may not matter.
Some folks can grow great plants with a recipe but I need a formula