Idk, so like you all I was skeptical as well lol, but I 19-4-23 a try and have NOT been disappointed at all! I’ve actually almost decided to not go back to using 20 bottles of the other brands. I use 19-4-23, root Excelurator by house & garden, add a little Sweetner, and cal mag. Then I reduce the 19-4-23 when in flowering and add a bloom booster.
here’s a few pics from my grows With 19-4-23
If anyone has any other all in one recommendations I’d love to hear them out. I’m willing to try others but 19-4-23 has def done the Job well