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[Guest]

We have a 3 1/2 month old tank and started noticingthese small white spots on the back glass. They flickright off when cleaning using a razor blade. The back glass does not get cleaned as often as the front and sides.

Definately not baby snails because they do not move. I do have some and they are very cute.

Any ideas what these are or what causes this?
Is it a good sign or bad? Some type of coraline algae?

[Guest]

I have something similar, but mine look ilke little beginning spirals. I have them on my live rock as well...

The longer they are there, they are getting bigger, and look more & more like little fan worm tubes.....Not sure if that's right, but would appreciate any feedback as well.


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[Guest]

These are probably tiny worms, likely in the genus Spirorbis.

Here is a link: http://www.augsburg.edu/biology/aquaria/SpeciesInfoFiles/algae_Corallines_Thalassia.ht ml

Other interesting and common little encrusting things are vermetid snails: http://www.globaldialog.com/~jrice/invert_page/vermetid.htm
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Brittlestars! http://home.att.net/~ophiuroid
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[This message has been edited by ophiuroid (edited 04 May 2001).]

[Guest]

the white spots on the back glass could possibly be coraline algae. you said your tank was about 3 months old right? if it is coraline algae it would start out as very small white spots.

[Guest]

If you leave them for a few more months they'll look like this.... LOL

http://home.eznet.net/~terry10/pics/overflow.jpg

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[This message has been edited by Guy (edited 09 May 2001).]

[Guest]

Some of them look to be foraminiferans. I know that I have tons of them.

Brian

[Guest]

If you over-dose calcium you can get white spots too.