Our house had a pool with SWG and we're working on trying to maintain ourselves. One question I have is why there is a chlorine/bromine feeder - thought the SWG produces the chlorine for the pool?? Can someone provide some info as why the system would have this as well? Should we be keeping it stocked with chlorine tabs? Is there a difference between bromine/chlorine (besides chemical compound) or is one ok/not ok to use with SWG? Not sure what was in it before - does it matter if I switch? Sorry for all the questions, just figured I'd get them out there at once. Thanks in advance!