Now that i have you looking with title like that i have a small Aptasia prob twanty or so. So im looking to buy a few of those little things that just eat them and die. But i have two onyx clowns and a yellow tang i know that will pick at them. Is it ok to but those three fish in a 20g for a week with a power head and heater?

now I got like 7 in a 175 gal tank that's only 5ft long but they have a field day..
just make sure to feed it alot and keep it fat and healthy... I think I always starved mine to death..

