Serum Total Maintenance - 2L$119.95Enjoy clearer waterWater will look and smell freshYou can use much less sanitizerWater will feel soft and silkyHeater element(s) will stay cleaner w/o calcium build-upOperate pump(s) less per day, week or monthSave money and maintenance time Serum Total Maintenance - 2L quantity — OR — Add to cart Categories: Chemicals, Serum Tags: hot tub, Maintenance, Serum Description DescriptionUse a small amount weekly to keep biofilm and other containments from building up in your plumbing system with regular spa usage. Repeat this process. (Use just 1oz of Serum Total Maintenance per 100 US gallons every 7 days)Related products SpaGuard Total Alkalinity Increaser $11.47 Select options SpaGuard Stain and Scale Control $18.97 – $23.97 Select options Spa Frog Bromine Cartridge $12.99 Add to cart SpaGuard Brominating Concentrate $23.97 – $66.97 Select options