Is there any real danger just casting granular calcium chloride on the surface of a pool? I've read that you need to mix it in a bucket in small batches because of the heat of solution, but I figured that was a lot of trouble with 50lbs of ice melt. I just cut open a bag of granular CaCl ice melt, and cast it out across the surface of my 40k gallon plaster pool. It seemed like it dissolved quite quickly, very little hit the bottom and only a few little chunks were left for me to break up with the brush. Did I just court disaster?