Specially formulated to prevent scale in spas and hot tubs.

• Aids in the removal of existing scale
• Prevents dissolved solids from separating into spa and hot tub water

Tips:
Use Defender regularly to prevent mineral buildup, causing the spa's heater or equipment to fail. Use as a follow-up to Metal Gon, applied at start-up.

Compatible with:
Chlorine, bromine, ozone and biguanide sanitizers.