16ml a gallon is way to high!!! as you know, using bio canna less is more!
I do hear people say they use 'salt' micro elements ( or is it macro elements )
also, I do love bio canna, but love GHE bio sevia even more.. my extent on the GO line was peppers, and did fine, but never on my pot plants, I added a couple times and that was all, then back to bio canna.