Energize is part two of the two-part bromine sanitizing system. When combined with Bromine Booster it creates bromine which sanitizes and controls bacteria and algae in your hot tub. When added it starts to disinfect immediately and is completely soluble. The 2 part bromine system does not affect the pH or total alkalinity of the water and is easy to apply. The bromine level in your spa should be maintained between 3-5ppm.