I said as I recall. I have been reading up on so many different things I am probably confused. That's why I come here to seek advise, so I don't have to trial and error it. I am definitely not giving out any advise as I am absolutely no expert. I think I may have honed in on the Blue Stuff as it says it is for pools with heaters and dismissed the Purple as not because it doesn't specifically say it is. I guess I assumed and you know what they say about assuming...
Anyway, I do have a SWG so the Purple Stuff would be the best bet for me?