Sirona Alkalinity Up | Spa Alkalinity Increaser Type_Crossfire Burner Our first ever cookbook

Our first ever cookbook

but if your pH is high while alkalinity is already in range

or when the pool is not in use

On a fresh fill

Store in a dry and a safe place

Sirona Alkalinity Up | Spa Alkalinity Increaser Type_Crossfire Burner Our first ever cookbookSirona Alkalinity Up (also known as Spa Up) is a granular alkalinity increaser that lays the foundation for balanced, comfortable, worry free spa water. Made from 100% sodium bicarbonate, it raises low total alkalinity and with it, gently brings up pH so the rest of your water chemistry can finally hold steady. Total alkalinity is the quiet hero of spa care. It's the buffer that keeps your pH stable, and when it runs low, everything gets harder: your