BOILER TREAT ULTRA Multi Purpose Boiler Water Treatment - 1 Gallon | Prevents Scale & Lime in Steam Boilers, Hot Water Systems, Closed Loop Systems & Wood Burning Boilers AVOIDS SYSTEM SHUTDOWN: Prevents scaling, corrosion, sludge buildup, harmful impurities and more MULTI-USE: Perfect for closed loop systems, hot water systems, steam boilers, wood burning boilers EFFECTIVE AGAINST: Scale, Lime, Mineral Deposits, Oxygen Corrosion, Condensate Corrosion, Rust SAVE MONEY: Avoids costly downtime, expensive maintenance and extends your systems lifespan BOILER PROTECTION: Places protective film on all metal parts, maintains pH control and softens water.