Anybody seen these?

[wings2fly]

I have these things everywhere... They are even growing on dead rock... and on the glass of the aquarium..

 

[tizzo]

q-tip sponges.

 

[wings2fly]

Is that a good thing? How big are they going to get? Where did they come from? :cheer: :cheer:

 

[interj]

I had them growing in my tank once. It happened when my PH was very low, I am not sure if it is related but you may want to check anyway.

 

[meadbhb]

Hiya,
Harmless filter feeder.
Meadbhb

 

[ophiura]

Will bloom and die off relative to available nutrients. Very common in young tanks. Won't get much larger than, well, the tip of a Q-tip.