I have never used the Save A Chick ones but generally its 1 package per gallon of stock solution which is then meant to be further diluted out.
From back of Sav-A-Chick
Directions for use:
Mix 1 individual packet (approx. 0.25 ounces(7.09 grams) of dry powder) into 1 gallon of clean, cool water. Offer the mixed solution for 1 to 5 days during hot weather or other stress.
I went and got my packet of sav-a-chick too and was just gettig ready to post that!