SwimFresh Bromine Tablets should be dosed via a chemical feeder (brominator), which is easy and inexpensive to install retrospectively to an existing pool. When set up correctly your brominator will dispense the correct amount of bromine into the pool to maintain the ideal level between 3.0 to 5.0mg/l and all you need to do is top up the brominator with new tablets as and when required, this makes maintaining the sanitiser level in your pool very straightforward.