BT, how big are the holes you drill into the 1/2" PVC ??

I've got some pretty big BW's in my tank and would like to get rid of the larger ones. They're about 2 inches long.....perhaps 1/4 wide......4+ inches long stretched !

Very nasty and disgusting looking !!!

Bristle worms are good for the tank as they clean rock, sand and whatever else. I haven't seen them eat a fish, unless the fish is already dead, I don't think they have the ability to catch and kill.

I personally would leave them, I have lots myself... IMO it is a sign of a healthy tank.

Unless they are big i would leave them. If you want to get rid of them i had a friend us something similar to the material that they use for aquarium nets to wrap a table shrimp in it with an elastic over it. put it in a night and the worms will be in it in the morning and then throw it out.