Adding Chlorine or Bromine tablets directly into your pool skimmers can cause problems. When the circulation pump is off the chemicals can sit in the skimmer causing brittling of the plastic. It can also cause a very high dosage of sanatiser to enter your pump when it is switched on which could damage it.
Chemical Feeders are designed to simplify pool dosing. Simply fill the feeder with tablets and adjust the dial on the bottom to achieve the desired result. It is important to install them after the filtration and heating systems in your pipework run. Install with a Non-Return Valve to protect your delicate pool equipment.