Bromine Pucks will disinfect spa water keeping it clear and free of odour. Bromine pucks give the effectiveness of chlorine without the chlorine odour. It controls bacteria and algae in spa water. Bromine Pucks are a safe and effective slow dissolving bactericide, algicide and disinfectant that, unlike other commonly used chemicals, performs well over a broad pH range. Spa Life Brominating Tablets are used to disinfect your water, keep the water crystal clear, as well as keep it odour free.