• Gwargwadon ruwa na iya hana ma'auni (Pools water absorbs barbashi daga waje iska, sa'an nan kuma zauna a kasa, a karshe gina up a matsayin layers na sikelin film) / hana stains (Pool stains ne sau da yawa cakuda spores, kwayoyin cuta, datti, ma'adanai. , mai ko daga ƙananan abubuwa na ƙarfe a cikin tafkin) / hana algae (Algae na iya samun tushen tushen abinci mai ƙura kuma ya kafa ƙaƙƙarfan ƙafa a cikin ruwa mai datti) da kuma hana ƙura.