https://waterhardness.uk/compare 2025-05-29T23:09:03.000Z daily 0.9 https://waterhardness.uk/compare/sw1a-1-vs-m1-1 2025-05-22T16:28:16.000Z weekly 0.8 https://waterhardness.uk/compare/sw1a-1-vs-b1-1 2026-02-08T23:09:03.000Z weekly 0.8 https://waterhardness.uk/compare/sw1a-1-vs-eh1-1 2025-04-19T10:34:58.000Z weekly 0.8 https://waterhardness.uk/compare/b1-1-vs-m1-1 2025-02-03T17:39:33.000Z weekly 0.8 https://waterhardness.uk/compare/ab10-1-vs-sw1a-1 2025-08-20T16:28:16.000Z weekly 0.8 https://waterhardness.uk/compare/ls1-1-vs-sw1a-1 2025-03-14T00:08:56.000Z weekly 0.8 https://waterhardness.uk/compare/bs1-1-vs-m1-1 2025-09-09T16:28:16.000Z weekly 0.8