Sure Life Better Bait minnow holding formula, directions don't add up

I bought 3 Lbs of BB Minnow formula for my minnow bait tank. Directions say 1 tbs treats 50gal and 1 cup treats 400gal. My confusion is that there are 16 Tbs in a cup and if 1 Tbs treats 50g then shouldn't 16Tbs(1 cup) treat 800. I know you can't overtreat but I can't see using more than needed. Am I missing something or is my figuring right.

I believe you are correct. Their math is Skewed.
I'd treat a little heavy just to be safe. There's nothing worse than a tank full of dead minners!

Your right, I use 2 tbs for my 75 gallon tank and have never had any problems.