[Dave]

Personally, I do pretty well on cheeseburgers and fries–but I’m not running in the Olympics either! Great digesters need great nutrition, macros, minerals, and trace metals too. In the AD sites we work with, most do not need any supplements. Some can get low cost cobalt, selenium, etc. from local animal nutrition and farming supply chains, only a select few need anything more sophisticated. Working with a variety of feedstocks is an option for some folks to add nutritional variety to their digesters.