I had an explosion of aptasia in my tank. Tried everything, lemon juice, apt-x, joes juice. They all killed whichever single one I injected(even ordered medical syringes online with needle points because the ones that come with any product suck), but could not keep up with the swarm. I got a 40 breeder with a 20 refuge, I put 4 peppermint shrimp in, within a week all aptasia were gone. My refuge was swarmed as well, one of the shrimp made it down through the line somehow without killing himself. Alone he cleared the sump. I moved him back up and the sump is covered once again. So I really don't know if I will ever get rid of the horrible things, but I'm telling you find something that eats them, and where ever you put them, there will be no visible aptasia.