ID please!!

[soonerfan12]

Hope this is the right place for this.. These are growing all along the back of the tank glass. And in my glass cleaner... Haven't noticed them on any rocks yet.. No idea if they are good bad or whatever.

 

[JoeTSI]

Pineapple sponges. Harmless filter feeder.

 

[soonerfan12]

Ok good. Thx!