I think it is good stuff, but I was running with the Necessary Plant Energy acid supplement and ran into problems because my freakin' tap water already was loaded with organic acids and I didn't know it. It's looking like I will be using the Cornucopia line on my vegetable patch, which is on city water and will definitely benefit from the added goodies. Just FYI, it is VERY powerful stuff and start out at 1/4 what the bottle says!