I was just researching them as I saw a couple (only 2 lol) in my tank and read some people had CBB and six lines eat them but no real consensus on their effectiveness.

They grow all over my rock and the coral in my tank just encrust over top of them without showing any signs of irritation. I've probably got 5-10 of them for every square inch of exposed live rock so I'm honestly having a hard time believing that this is a real problem for you.

Why do the boiled ones need to be re cycled. I just dipped them quickly in a boiling vat

because the boiling water killed most of the beneficial Bactria

I'm talking more about my Lps, anemone, and acans, which all show signs of irritation and stay closed almost all the time since they have started growing amongst them. Also they are into my frogspawn quite a lot which is keeping it about 50% closed up all the time. Though I do appreciate you not adding anything helpful to this thread, as I am stopping to read posts while I scrape my rock free of thousands of them. There is also documented cases of them over filtering the tank resulting in the death of some of my more desired filter feeders such as my cucumber

There is a sebae anemone, 4 acans, 1 frogspawn, 1 hammer, 1 caulastrea, 3 trachyphyllia, 2 elegance, 1 lobophyllia, 3 chalice, 1 duncan, 1 platygyra and a tiger tail cucumber in my tank. All of these have been in there for 3-8 years growing amount the vermetid without incident. Could you provide a reference or link to the cases that you're talking about? Or even some pictures of what you are talking about in your own tank? What species of holothuroid do you have? I thought you bought a tiger tail but those aren't filter feeders.

Yes I bought a tiger tail last week. But I had a large pink filter feeding cucumber in my system for quite some time. I will try and find a reference to the cuke dying off as I have read through piles of info over the last week or so. Also I am not interested in comparing notes as I do not have to convince you that I am having issues with them. I am about half way through the removal of them which I'm sure won't rid me of them entirely but it should make it easier to starve them out now.

This also concerns me.

violet. The animal forms a small, calcareous shell mound and then sends up a short, three to five millimeter long, vertical stalk. The upper edge of this tube may be razor sharp, and may inflict rather nasty cuts. A few of these would be no real problem; however, this animal reproduces very well in marine aquaria. Left unchecked, it can reach populations of over several thousand in a few months. They prefer high current areas, and will infest and clog plumbing, significantly reducing water flow. In severe infestations they can clog and shut down pumps. The only solution in cases like these is physical removal of the animals using whatever method is easiest (a muriatic acid bath works well).

From http://reefkeeping.com/issues/2005-01/rs/index.php

Vermetid Snail
Image: Classification: Comments: Status:
Vermetidae This group of snails have forgone their mobility by attaching their "shell" to the substrate and converting it into a calcerous tube. They release a mucus web out into the water, which they then reel back in and consume, eating the food particles caught in it. Their presence is a sign of a healthy system and don't typically cause any problems. The exception is if the mucus net irritates a neighbouring coral, which can lead to death of the polyps that it is irritating.
Fromhttp://www.masa.asn.au/masawiki/index.php/Hitchhikers_Guide_to_the_Reef_Tank

A six line wont touch them , there is however a wrasse that is supposed to can't remember the name.