These dosages were posted by Casportpony in a past post:
"The 9.6% Corid liquid dose I use is 10ml (2 teaspoons) per gallon for 5 days, then 2.5ml (1/2 teaspoon) per gallon for 7 days. Make fresh daily.
The 20% Corid powder dose I use is 1.5 teaspoons per gallon for 5 days, then 1/2 teaspoon...