The Answer EP - 18in Quick Change Water FilterBuilt for Hard Water. Trusted Where Failure Isnt an Option. ScaleX Pro The Answer 18in EP eliminates scale driven failures without chemicals, salt, or filter stacking. It controls and removes temporary scale up to 85 grains, reduces chlorine and chloramines, and protects critical equipmentwhile preserving healthy minerals for better taste. Designed to fit all Everpure heads and manifolds, it delivers high flow, long service life, and reliable