Megacrop is quite amazing. Smokes both jacks and maxibloom for me. It has a lot of great additions to the nutrients but It does not have any microbes. *edit* the amino acid chelated minerals is the big seller for me. I run all COB leds, and with jacks I had to add some magnesium to the mix. Megacrop, being amino acid chelated mag, and more available to the plants I need nothing.