Thanks everyone! I've been using it just at shows since it's pretty hot now and she works up a sweat ;) She drinks VERY well, so I just add a 3/4 scoop (which is the equivalent of 3/4 oz. I believe) to a 3-gallon bucket and she will literally drink the whole thing in one standing after we've done a jump round or she has really worked hard! :) The directions on the stuff I have (Apple-dex) are to add 2 oz. per 10 gallons.
But I did it this weekend after dressage, then after both jump rounds were over...she drank all the water, and that was about 5 1/2 gallons of water or so, and maybe 1 1/2 oz. of the electrolyte. I'm just wondering for future knowledge...is there a max amount of electrolyte you should give your horse (for example, don't go over 2 oz. in a day)?
"The times when you have seen only one set of footprints in the sand, is when I carried you..."