Marine/RV iron filter and softener combo uses portable 2

https://reidstki405.iamarrows.com/do-you-need-an-iron-filter-signs-your-water-is-begging-for-help

Marine/RV iron filter and softener combo uses portable 2.5x10 cartridges, polyphosphate, and carbon block; quick-disconnect hose fittings, brass Y-strainer, and onboard TDS meter optimize campground well water for appliances.