What is this green ball in my tank?

According to Wikipedia (:rolleyes:) I was actually right the first time...

Subsequently, A. linnaei has been accommodated in the genus Cladophora in the Cladophorales and has been renamed Cladophora aegagropila (L.) Rabenhorst and Cl. sauteri (Nees ex Kütz.) Kütz. Extensive DNA research in 2002 returned the name to Aegagropila linnaei.
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http://en.wikipedia.org/wiki/Marimo
 
No, just to be picky jpappy, A. linnaei later renamed C.aegagropila. Either name I'm not sure that's what the OP's ball is. Java moss or other floating moss or algae can form a ball shape if it's constantly spinning in the filter return current. We need a better pic & I still might not be able to tell, AFAIK I haven't had any type of clado.
 
fishorama said:
No, just to be picky jpappy, A. linnaei later renamed C.aegagropila. Either name I'm not sure that's what the OP's ball is. Java moss or other floating moss or algae can form a ball shape if it's constantly spinning in the filter return current. We need a better pic & I still might not be able to tell, AFAIK I haven't had any type of clado.
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The last part of what I quoted says this...

"Extensive DNA research in 2002 returned the name to Aegagropila linnaei."

Which is supported here... http://www.algaebase.org/search/species/detail/?species_id=59094

A much better source than wikipedia ;)

Anyways, it could very well be moss but the OP does not have any so I bet it's a bunch of clado/hair algae/marimo.
 
Well I was about to buy a marimo ball for this tank anyway.. guess ill let it grow

thanks guys
 
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