These high quality Bromine Tablets are ideal for daily dosing of your swimming pool or hot tub, to produce free active bromine which kills bacteria and other potentially harmful organisms. These tablets are designed for use with bromine feeders and floating dispensers. The tabs are round and about 25mm across. Bromine is more gentle than chlorine, has a weaker odour, works better at higher temperatures and across a wider PH band.Bromine Tablets are a popular method of sanitising domestic spasThe ideal Bromine level is between 4 parts per million (ppm) and 6 ppmWe recommend testing the Bromine level in your spa daily and immediately before every useThese tablets are designed for use with a Bromine feeder or floating feeder.When feeder device requires refilling with tablets always follow the manufacturers instructions.Ensure tablets used in feeder are of the same chemical (Bromo-Chloro-dim- ethyl Hydantoin). If other materials have been used previously, was out feeder thoroughly before adding tablets. Use only feeders designed for bromine.Adjust feeder to ensure a constant Bromine residual is present in the pool or spa.Check bromine levels regularly with a Relax Test Kit and maintain a bromine residual of 3-4mg/litre (ppm) for domestic pools/ spas. 4-6 for commercial pools/ spas.Check pH value regularly with a Test Kit and maintain a level of 7.2 to 7.6