Marine/RV iron filter and softener combo uses portable 2

https://alexisyaik941.yousher.com/the-science-behind-the-softpro-iron-filter-system

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.