Man a UV laser is sketchy as hell....
That said I have a 3w blue laser I used to kill aptasia. Its super satisfying to watch them boil and pop and yes its a great way to kill the hard to reach ones. And its funny as hell watching the fish case the dot like a cat.
Downside it doesnt fully kill them and they will grow back so its more of a maintenance item than a solution. It takes around 1-3 min of burning per aptasia. AND if you dont watch where the reflection is (some light bounces off the glass rather than go though it) you could have a bad time. I burned a hole in my shirt once.
EDIT: for those wondering my laser didnt do squat for vermetids.