Two IDs needed please :-)

[Waters]

Any idea what these two things are? The first one is totally transparent...I have them in a few different areas. The second worm looking thing appears to be growing pretty quickly. I have 3 or 4 or them. I don't see anything coming out of the end other than some brown stringy hair algae looking thing that is roughly 3 times the length of the tube. The tube itself doesn't move. The only time I see it release the "string" is when I do water changes....then all 3 of them do it at the same time.

 

[clownfitch]

The top pic looks like a clear sea squirt. Harmless filter feeder. The bottom pic judging by your description sounds like a vermitid snail. If it has a calcified tube and shoots out feeder tentacles when you feed or sediment is stirred then I am sure that is indeed what it is. If so you need to kill it asap. The best method I have found is to plug the entrance with super glue gel. Hope this helps.

 

[Waters]

Based on pictures, it does look like that is what it is. How does the super glue gel work underwater? Any special kind? I have always used reef epoxy to glue down coral....I have never tried using super glue for anything.

 

[clownfitch]

Super glue gel works great. Just put a small dab over the entrance. I like the Loctite ULTRA Gel Control Super Glue. Most any hardware store or Wal-Mart will carry it. I use it for glueing small pieces to my rock and frags to plugs also. Great stuff.

 

[Mike J.]

The first picture is an encrusting sponge.

 

[Waters]

So can these just be manually pulled off and removed from the tank or is it better to plug and kill them, leaving them where they are?

 

[Mike J.]

Yes, you can snip or snap off the vermetid snail at the base (curly part) and it will kill them. Careful, can be sharp.