Hi guys, I have 13 Cardinals in my new (ish) planted 42g. I didn't QT because A. I don't have one, and B. they're the only fish in the tank. One of them has one small ich looking white spot on it's body, however I first noticed it 9 days ago and have been treating with King British white spot control for 7 days and the spot hasn't changed at all. None of the other fish have any spots and the said fish has only had one spot the whole time. From what I've read about ich the spot should've fallen off by now. I've put my temp up to 28c as from what I've read that will speed up the lifecycle of it however it hasn't changed anything. My parameters are all in check (0,0,20) and the fish are all acting absolutely fine. Does anyone have any ideas what else this could be?