Well, I think I beat the nuicance algae I had (brown wafer algae - lobophora ) I tried chopping it off of the rocks and it kept coming back so I tossed the rocks that had the stuff on it in a pot of boiling water for a few hours and walla!! Hope you get rid of it all soon
Boiling or "cooking your LR" is a last resort IMO and wouldn't suggest you doing it either. I did it because my tank was small, I have a small bioload which didn't need too much to support it and I had a rock that could, IMO support the whole tank that would stay in there had I removed the others and so I went for it.