I stopped using nutritional yeast for my ducks because of the cost, and started putting this powdered niacin in their water instead. I use a couple scoops in their 15 gallon waterer every once in a while. It's a very high potency. Would it be too strong to use for the ducklings' niacin supplement too? If not, how much do you think I should put in a 1 gallon waterer? The scoop is about 1/3 teaspoon, and 1 scoop is 1000mg. Thanks!