You talking about something like this lol I get them in acropora in fact these are "acropora vermited frags" I just broke off the tube playing around lolbecause of vermitids, I now have plating monti's that are growing branches like sps/the verm tube gives new substrate for the anterling of formerly flat monti
and they grow up though my favia, which then creeps up the verm tube to create a projection growth just the same. they're not that bad in my opinion. I know of no known way to actually beat them across 10 reefs, they're that suited to where corals belong. I know of some luck runs posted, nothing in pattern.
post a pic of this tank's rock Ill post back a matching job we did before and after on the rip clean approach. keeps your same rock, does not use bottle bacteria, is surgical takedown cleaning + reassembly as skip cycle your current setup.
we kick out the aiptasia, and algae, rinse out cloudy waste-filled sand, you'll be keeping the verms lol but will have a shiny new looking reef all off your current rock. avoiding this work practice ability simply means start overs will be required bi annually.