Phosphate/GAC Filter 100gpd The resin color changes from

The resin color changes from blue to a light brown/amber color when it is exhausting

such as when the RO unit is being used as a top off system where the unit makes water to match the evaporation rate

Among increasing the water PH value

and you’re looking to invest in a water softener

ADD A UV LIGHT TO YOUR SYSTEM

Phosphate/GAC Filter 100gpd The resin color changes fromPhosphate GAC Filter Phosphate GAC Filter By Aries Aries FilterWorks Carbon Phosphate combination cartridges use carbon to effectively improve taste and odor by removing chlorine and phosphate to reduce scale buildup. This combination of Premium GAC carbon and phosphate dramatically improves the quality of drinking water, as well as its ability to protect metal parts from corrosion when used in certain industries. Dimensions and Weight Dimension: 10"