In past I had a major Aptaisa out breaks. It was so bad I cared not for anything but getting rid of them. Tried the file fish. He loved eating them Wiped them out in weeks. He ate manoj anemones too. Unfortunate he also liked mushrooms and green palie's. Wiped a colony of blue and one orange mushrooms. Just about any softie/aneome family I think. Not my BTA and not ricordia mushrooms. Those did not get touched. But any other zoa, paly, or mushroom.
After I removed him, to my surprise the blue and orange mushrooms recovered. Even though there was no visible sign after he ate them. There must have been some left in cracks and they grew completely back. Right in same place as before. So did some of the nuclear green palyies. Unfortunately I think that their maybe a grow back issue with manoj and aptasia also. I have also had lemon peel angels eat aptasia. Same issues though. They will go after corals too.
For my last rebuild I had placed all my rock in trash buckets of SW with powerhead and lids for two months (Search cooking rock). Hoping that would help kill any remaining pests. When I got the system up and running after a month or two I found that a few aptasia had returned. I did add half a dozen peppermint shrimp. They wiped out any visible aptasia right away. I think its hit or miss with shrimp. Its been 6 months and I just saw my first aptasia again hidden underneath a rock in a crack. I don't know if the shrimp just haven't found it. Or if they lost the taste for aptasia since they been eating fish food for months now.