The strongest bacteria fighter in powerful granules that are extremely easy to use. Applied in the correct amount while the pump is running. You don't need to pre-treat with bromide saltsor add oxidizers to activate it. Brominating Concentrate is pH neutral, there is no need to adjust pH or total alkalinity either. This "one-step" product is used as a regular sanitizer and as an oxidizer to rid the spa of odors and undesirable compounds.