This is preemptive but I'm assuming at some point in the near future I will need to add water to maintain my water level in the pool (it's finally stopped raining in mid-Michigan). My water quality report from the city shows iron present (.02-.1 ppm). http://www.meridian.mi.us/home/showdocument?id=18569 I searched this site to see any recommendations for filter attachments for my hose but came up empty. Are filters recommended and if so any particular brands that are better at filtering out hard metals from the water? Thanks everyone.