I have a question. Does anybody know of a safer chemical to use in swimming pools? Right now, the one I use for therapy uses chlorine and muriatic acid, which is the same as hydrochloric acid. I’ve spent an hour online to see how dangerous this chemical is, and it’s not good. This has to be a safer alternative. What do you use in your swimming pool? Please leave a comment if you can help me with this problem. I would like to know which chemicals you use in your pool to keep it clean. Thanks!