I am growing hydro now, but I only use Flora Nova Bloom, because it has everything the plant needs, even the micros. I do add Cal-Mag due to using distilled water for 0 PPMs. I also add a few drops of SuperThrive from time to time, plants love it.
You're funny. The bottle looks like a scam. It is just old they haven't updated it. They have been around a really long time and those who use it swear by it.