Have you used flaVUH???

I am a big fan of amino acids (and humic and fulvic acids too) and your plant will like it. 4-0-4 will need to be taken into account when mixing it with your other fertilizers. I find using half strength twice as often as recommended is better than full strength once in a while. Gentle and frequent feeding rather than heavy feeding seems to work better in my experience.

it has a guaranteed anaysis. any product containing same ingredients will do the same thing. 4-0-4 is hardly a "concentrate." Without looking i can almost gaurantee this is some overpriced nonsense. fertilizer ingerdients - the pool of them - are mostly ubiquitous and cheap raw materierals.