Hi SteelB,
I may be late to the party, however, we have a great source of agave. We have access to 4 different color variations of 100% blue agave nectar and stock both a light and a dark option in the US. As Brewstilla said, it is really important to dilute the 75% brix solution. We recommend 12 brix as this maximizes yields without difficult fermentations. The correct balance of nutrients is also needed (DAP & vitamins). Please feel free to reach out to me and I can assist.
All the best,
JB Harrell
JB@brecktech.com
925-984-6000