One customer carefully tracking use of chemistry with their PCS, upgraded from a Type II to a Type III and reported a drop in hourly chemical consumption by 0.14 gph. We believe because the sonic velocity sensor measures continuously, bulk additions of chemistry are no longer called out, conserving chemistry. So, for that customer, based on their annual usage, that drop in hourly consumption saved them 400 gallons or $25,000/year in cleaning chemistry.