Nope that sounds fine to me. As a very vague and general rule of thumb I am for things with under 5g/100g of carbs. Obviously it depends on how much you are using. Your metre testing will soon tell you what you can and can't get away with!Just checked on a tin of tomatoes and it says 3.5g per 100g of carbs - is that considered excessive? that's only 14g in a whole tin, and that picture looked like it would feed 4. I'm new to this to genuinely surprised.
What's stock pot?.. Broth?