Shower Filter for Hard WaterThe MineralStream 15 Stage Shower Filter for Hard Water is an inline shower water filter that fits between your shower arm and shower head to soften hard water and reduce chlorine, heavy metals and other contaminants no need to replace your existing shower head. 15 stage filtration Germanium stones, KDF 55, activated carbon and mineral balls purify, soften and revitalise your water. Reduces chlorine, plus heavy metals, rust, sand and limescale.