regarding concerns about safety, calcium chloride is already in a lot of foods such as electrolyte drinks, cheese and tofu, canned veggies, and even bottled water. As for the brown algae, it is a seaweed which is, in general, known as a source for iodine which the body needs but cannot make. Overall, this sounds like it is a much safer, healthier, natural way to package water. I hope I can try it out!