I did some research and I found a really great site that had a couple of recipes for homemade pedialyte (http://www.ourlittlemonkeys.net/2010/01/26/homemade-pedialyte/).
I gathered the bits to make the solution.
Water, baking soda, sugar, salt, and flavoring.
I doubled up the recipe from http://www.ourlittlemonkeys.net.
I used 8 cups of water and added 1 Tsp Baking soda.
I then added 6 Tbsp Sugar.
Next I added 1 Tsp of Salt.
I mixed it and refrigerated it.
And here is the finished product!
I did read that drinking Pedialyte might be a little extreme and it should be done in moderation so I am trying to watch for any weird reactions. The taste isn't what I expected as the Pedialyte I bought in the store was more tasty. It could be the flavoring packet that I had used though.