I was looking @ their kibble when I was searching for new food & skipped it bc tapioca was the 2nd ingredient (since the 1st 5 ingredients make up the bulk of the food), plus Turbo is intolerant to anything pumpkin (it has pumpkin seeds in it, he's intolerant to beef too!), so didn't get it. I do feed Mimi & Turbo NV Organic Chicken Raw & they are off kibble for now. But it all comes down to how your individual dog does on the food.
Here's a good read/411 about tapioca (it's another dog forum, hope it's ok to post, if not please remove!):
Is grain free really all its touted to be?