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Cody 
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 Topic: Not sure what it is, still new to this
Posted: April 05 2011 at 11:51pm |
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14g BC been up and runnin for a few months. Sorry I dont have a pic but I have tried to research and find what im concerned about but I cant find it. These little creatures are very small and clear and almost look jellyfish(ish) they have a split tail. Sorry if that didnt help, any ideas???
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CapnMorgan
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The Capn'
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Posted: April 05 2011 at 11:55pm |
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Sounds like hydroids, the appear as a tank matures and go away eventually.
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Steve My Old 180G Mixed ReefCurrently: 120G Wavefront Mixed 29G Seahorse & Softies Running ReefAngel Plus x2 435-8
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Cody
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Posted: April 06 2011 at 12:03am |
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Can you explain how they will "go away" please, thanks.
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CapnMorgan
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Posted: April 06 2011 at 12:11am |
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They need very specific conditions to continue their life cycle, these aren't met in an aquarium so they die off soon after they appear. It's a normal thing to see in a newer tank that is beginning to mature.
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Steve My Old 180G Mixed ReefCurrently: 120G Wavefront Mixed 29G Seahorse & Softies Running ReefAngel Plus x2 435-8
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Mark Peterson
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Posted: April 06 2011 at 1:55pm |
Here's a pic of a hydroid with copepods also living alongside on the glass. 
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Cody
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Posted: April 06 2011 at 9:38pm |
THank you 
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phys
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Posted: April 06 2011 at 11:10pm |
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is the hydroid the split tail? whats the fuzzy thing. i saw those on my tank for awhile but not anymore.. still dont know what they are.
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CapnMorgan
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Posted: April 07 2011 at 12:32am |
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The hydroid is the fuzzy thing. The small crustacean is a copepod. If you look at your tank at night you'll see copepods crawling on live rock, glass, and everything else. They are beneficial life in any tank.
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Steve My Old 180G Mixed ReefCurrently: 120G Wavefront Mixed 29G Seahorse & Softies Running ReefAngel Plus x2 435-8
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phys
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Posted: April 07 2011 at 12:55am |
alright.. i thought the little crustation was a copepod.. kinda confused me for a min.. lol thanks!
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Mark Peterson
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Posted: April 07 2011 at 8:33am |
The Hydroid is the large round thing with tentacles. It's body is smaller than a pin head. The copepods are the smaller things. The animals you can easily see crawling on rock and around the sand are Amphipods. Technically speaking, none of these are crustaceans. Crabs and shrimp are crustaceans. Here is an Amphipod, typically 1/4" long but some can reach almost 1/2"  This is a greatly magnified pic of a copepod. Though "Tigger Pods" used for fish food are much larger, the actual size of typical reef aquarium Copepods is no larger than a leg segment of the Amphipod. 
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