Mark is the guy, MANY years ago, who told me about the chicken feathers . High protein but not digestible for fish. I soon after talked to the Owner of a company who was producing high protein fish feed from feathers. They were selling quite a bit of it in North Texas. He said they had been getting amazing growth from their fish in their test pond. I asked how it was possible since it all went through their gut due to not being digestible. He walked away and left.
Reminds me of that young man who was pursuing a career in aeration via fountains at one of the last PB conferences. You crushed his dreams and left myself and Allen Hall/FireIsHot to comfort the young man off the proverbial ledge. Brutal.
