Wont Copperband's do the trick if your tand is large enough. i had some and my peppermints have done nothing too. but come to think of it i havent seen my peppermints in about 2 months.
I have also tried the kalk thing and so far it works great,but take out the rock first if the raw kalk touches another coral it will burn or kill it TRUST ME ON THAT ONE.
