It might work but you can buy a pound of soy derived water soluble protein hydrolysate for $16.22
https://customhydronutrients.com/fertinitro-plus-one-pound-p-459.html?
A pound of potassium sulfate for $8.99
https://www.amazon.com/Pound-Potassium-Sulfate-Potash/dp/B004JD6MGK
And a quart of liquid kelp concentrate for $15.95
https://www.amazon.com/dp/B00L2DB814/
That's less than the cost of two quarts of floralicious and you have enough to make probably a hundred gallons.
I'm sure nutrient companies hate people like me but I don't care. I hate the way they sell bottles of watered down ingredients for 1000 times the cost. The packaging costs them more than what they put in the bottle.