descaler

Hi, Can anyone recommend a good whole house water filter/descaler system? My water supplier, United Utilities, changed our supply from relatively soft, reservoir water to very hard, clinical-tasting water and I'm seeing deposits on bathroom fittings and in my kettle. I'm more worried about my...

I left HG Scale Away on ceramic tiles slightly too long - about 15 minutes. I was scrubbing away at hard to clean areas, that took ages to get off. It has left a white residue that doesn't come off if I scrub with water. I'm really hoping this is residue left on the tile (it looks this way) that...