Idk how much that is in American eagles, but your a liar if you can't find one of these cheap af (unless you live in a third world country i guess, but I don't think you would be in hydro in that case)
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For GH I like running the Lucas formula for my flower.
Some have said it doesn't work well for them in late veg
Pretty much run 1 part flora Micro, 2 parts flora bloom untill you get to your desired ppm (usually works out around 5-8 micro and 10-16 bloom). Sometimes you will need to supplement with calmag (make sure to add this first, 2.5-5ml/g)
Then add hydroguard if you can keep rez temps below 75
If you can't you might want to run a sterile rez with either UC root, chlorine or bleach