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Identification What in the heck is growing on my glass, corals, etc. Not sure what it is? Post here and we'll see if we can figure it out!
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Old 09-11-2009, 09:19 PM
coralette's Avatar
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Join Date: Aug 2009
Location: Hubbardston, MA
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Tank Size (US GAL): 75
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Name: Vivian Budnik
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Default tiny medusas in my aquarium

Hello,
I am kind of new to the hobby. I have mixed reef (both a 20 and a 75 Ga) aquaria. I have been noticing these little jelly-fish thingis that pop out in the water every few days.
They are about 1/4 inch diameter, short tentacles, and a foot that protrudes down the umbrella part. They are brownish-transparent and they pump pretty fast (I would say about 3 Hz). The question is, What are they????
I have been trying to find out, and at teh beginning I thought they were the medusa stage of a hydroid. However, mine do not look like the pic they show, and I have not "detected" hydroids in the tank (unless I am missing them by pure ignorance). For one thing, mine have very short tentacles, and the foot appears much longer than the one shown in pictures.
Anybody has any suggestions?

Thanks!
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Old 09-12-2009, 09:19 AM
gandorf2000's Avatar
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Join Date: May 2009
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Name: Randy Lyle
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Default Re: tiny medusas in my aquarium

a photo would help greatly with ID
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Old 09-21-2009, 01:36 PM
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Join Date: Aug 2007
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Default Re: tiny medusas in my aquarium

When did they show up? After a new addition? A picture would be great!
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