Here are some interesting specs on Megacrop:
NPK ratio: 2-1-3 is typically used for maturing tomatoes, maximizing bloom output with that ratio. If you bump up K with something like potassium silicate or a bloom booster, it throws the ratio off and you may get a magnesium deficiency.
NO3-:NH4+ ratio: 25:1- The most stable nutrient pH is ~9:1 (Trelease, S.F and Trelease, H.M., 1935, Science 78:438-439) The pH will probably drift up after a few days with Megacrop, but that's normal for hydroponics.
Ca:Mg- 3.4:1- Megacrop is probably suitable for coco at that ratio. Botanicare Cal-Mag Plus is 2:1, which is suitable for hydroculture. 2% magnesium might be a little low, but may be sufficient with chelators.
Si is 1.32 ppm at 455 ppm. If you like strong stems, you may want to invest in monosilicic acid with Megacrop.
Chitosan is one of my favorite biostimulants. When I contacted GLN to ask how much was in it, they said "not much".
Overall, I think it's a great all purpose nutrient for the price.