Now that I think about it, I only refilled two 28 ounce canteens with an electrolyte drink and about 75 ounces of my camelback with water at OutPost Camp. I got lazy and didn't want to fight the crowds at Trail Camp so didn't fill up. Clearly not enough fluids for 12 miles or so. I'm not sure if it's the altitude or my filter, but any water that I filter tastes metallic and is tough to swallow. I'm guessing it's the dissolved minerals, but any advice on filtering to remove?
