We are investigating the use of a SWG system and happen to have a 25 year old yet rock solid PAC-FAB Stainless filter unit on our gunite pool. Checking with Hayward they would only say that using their system with a stainless filter was "Not recommended". The question is: is it because of possible corrosion concerns around the filter unit or a potential issue with the functionality of the SWG?? I don't believe that the small level of salt is an issue with a high quality filter unit compared with all the other pool chemicals that have been used??
Does anyone know whre I can find out the real facts around this subject.