My above ground, indoor exercise pool just blew out its heater. The Hayward people said the heat exchanger was damaged through the Aqua Trol SWG that were both made by Hayward. Is there anyone else with this issue? My pool guy uses only the sticks for chemical checking and I had heard that Ph issues can cause damage. He swore all was balanced but I now have a broken heater. Now I am not sure about replacing the heater and keeping the SWG or giving up on SWG which I really like....this is annoying and expensive...any help or condolences??? Thanks.