What's your feeding schedule and dilution rates, and why are you using nutes from a couple of different manufacturers? (risky)

Different manufacturers add different chemicals at different ratios. Mixing manufacturers can and often will present a conflict of interest. (they don't play well with others) Big Bloom is the catalyst formula (a tea, of sorts) for the Fox Farms line. Unknown if the nutes and chemicals in it coinflict or magnify the nutes and chemicals in the Botanicare.

Personally, I'd ditch the CalMag and the Sweet, and replace it with unsulphured molasses.