Hard Water, Soft Gel: 400 ppm Flush Water and the Grade You Pick
Calcium bridging locks a polymer particle before it swells. How to read a water report, what to test, and why softened water can make gel performance worse.
Dosing by Flush Volume: Recalculating Gel for 4.5-Litre Cisterns
Why replacing 9-litre cisterns with 4.5-litre valves raised gel use by 30%, and how to build a dose table based on total liquid rather than per visit.
