If you are truly allergic to Chlorine you can use other products such as minerals or other chemical that treat the body of water. The Clear O3 and / or the Ultra UV2 dramatically reduce the chlorine needed to the pool and you can keep the count as low as .3 to .5 parts per million however keeping it low requires that it be checked daily.  A 1 to 2 parts per million will be a more manageable number. If you have stabilizer in the water, the chlorine will only be used as needed to handle new bacteria, algae spores, etc. If you have ozone that burns up the chloramines (the bad chlorine that makes you itch, have red eyes, and smells bad).  The UV is the Sanitizer and kills or makes inactive 99.9% of bacteria, algae, and viruses.