i have tried the hot water method and that worked like a charm the only thing is occasionally they will suck deep down into a crevice and you think you got it but a few days later they're back. but after a couple of times they're gone. another method that works really well is getting a pepermint shrimp. mine will eat aptasia within a day or two. i had it really bad on my rock when i first got it and within just a few days it was gone once i added that little guy. just be carefull that you get a pepermint because i think there is a simalar shrimp that looks very close and some stores will even sell them as pepermints. i don't know the name maybe someone else can help me out in that department. but that's just my 2 cents.
"The brighter you are, the more you have to learn."