Help ID white cotton-like growth on rocks

[RyanG027]

It only seems to be growing on one particular rock, but there's 2-3 small patches.

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[Str8linespeed]

Appears to be a sponge.

 

[thegrun]

Pineapple sponge

 

[RobZilla04]

Newish tank? They are a good sign.

 

[RyanG027]

Newish tank? They are a good sign.

Just about 4 months old at this point. First time doing SW.


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[RyanG027]

Thanks for the ID Str8line and thegrun


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[RobZilla04]

Just about 4 months old at this point. First time doing SW.


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Off to a good start!