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Old 01-17-2003, 10:02 PM   #1
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Here I go again.

ok, these have been multiplying in my tank for the last couple days, they have really multiplied since yesterday. We have a 29 gallon with live rock and live sand. 2 scooter blennies that pick at the glass and get the small copepods that I've seen on there, but they don't touch these. Any idea what these are, and please don't tell me they are baby snails, they don't move, they stay in the same spot, but just multiply. The pic isn't that great and with the camera I have it doesn't zoom real well.

LOL maybe I should start a book called "What is this?" Sorry I keep posting all the time in here. We are going out to buy more books this weekend.
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Old 01-17-2003, 10:26 PM   #2
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If they look like little tiny spirals they could be vermetid snails...they don't move, more like a tube worm that is really a snail with an identity crisis. Or they could be calcerous tube worms. Either way they are harmless.
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Old 01-17-2003, 10:26 PM   #3
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Ok. the pic is a bit hard to see but I think i know already.

If you look real close does it look like they have a spiral pattern to them?

If you take your fingernail will they scratch right off?

If so my guess is that they are baby featherdusters.
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Old 01-17-2003, 10:36 PM   #4
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looks like a result of a good calcium level. thats a good thing.
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Old 01-17-2003, 11:05 PM   #5
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I agree with RR, likely a species of vermetid snails. They're quite harmless feather dusters feeding on plankton. I have them everywhere in my tank

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Old 01-18-2003, 01:05 AM   #6
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Whoa, cool, feather dusters on the glass now that's pretty cool! so do I just leave them? I looked up the vermetid snails found one site that showed the tubes, I have one of those tubes on my live rock, was wondering what that was, thought it was something that was basically dead. SURPRISE! So I take it nothing eats these things? Do I just scrape them off the glass?

Thank you all for the quick replies!
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Old 01-18-2003, 01:13 AM   #7
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You can scrape them off if you dont want them to take over your glass. They are filter feeders, they get microscopic food from the water. If they are multipling then they are probably eating well.
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Old 01-18-2003, 01:20 AM   #8
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Ok thanks, so far they really haven't taken up the front of the tank that much, are they beneficial to the tank? From what I read on another site sounds like they could be bothersome with how much they populate.

Thanks again!
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Old 01-18-2003, 01:14 PM   #9
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Quote:
a species of vermetid snails. They're quite harmless feather dusters feeding on plankton. I have them everywhere in my tank
Actually vermatid snails and feather dusters are two different things. Vermatids will send out a mucus "fishing line" or "net" to snare floating plankton or bits of food. These nets become visible after feeding invert food, they look like cobwebs. They are actually sedentary snails that live in tubes rather than shells. I have literally hundreds ranging in size from a needle to a a small pencil. You can see the mouth structure on the large ones as they "reel in" the mucus to feed. I have a rock with the larger ones that have acropora growing on the outside of the tubes. Looks very much like a symbiotic thing but I think the acro is just being opportunistic. I'll post a pic if I can get a good one.
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Old 01-18-2003, 01:17 PM   #10
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Ok, great, I look forward to the pic thanks! And thank you for the info!
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