Corid 20% powder and Amprol 128 20% powder are the same thing, both are 20% amprolium powder.
The powder doses for poultry are as follows:


Based off of the above, 8 ounces is 226.8 grams.
226.8 divided by 50 gallons = 4.536 grams per gallon
The powder doses for poultry are as follows:
- The severe outbreak dose (.024%) for Corid Powder is 1.5 teaspoons
- The moderate outbreak dose (.012%) for Corid Powder is 3/4 teaspoon.
- The preventative dose (.006%) for Corid Powder is 1/3 teaspoon.
Based off of the above, 8 ounces is 226.8 grams.
226.8 divided by 50 gallons = 4.536 grams per gallon
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