I'm glad you mentioned the fish, because I honestly have never understood what the plants were deriving from them. I would like to know more about this. I have tried fish emulsion fertilizers in my garden but my cats begin earnest excavations and make a huge mess of things. I also wonder what exactly is in the kelp. Whatever it is, FF has figured out the right formulation. And I should point out that my little essay above was full of gross generalities. Different plants have different requirements and metabolic tendencies, but the points concerning ionic form and ion-based blockage is really important. That's why I cringe when I see first time growers opting for grocery store potting soil and Miracle-Gro. JUST SAY NO.:stoned: