I have a plug full of very nice palys that started growing a forest of bryopsis. I've pulled it off but of course it comes right back. Today I dipped it in full strength peroxide and only the polyps foamed, not the algae at all. I had pulled off all I could but some tiny pieces were on there still. Any other ideas? I've read others using peroxide to get rid of algae, is it normal for it to not react to the peroxide but the algae dies anyway?