What is this

[stevensbud]

I just noticed a bunch of these popped up in my tank. Can anyone tell me what it is

 

[Bpones]

Sponge

 

[WalkerLovesTheOcean]

Looks like a sponge, more specifically a pineapple sponge.

If these are popping up, it's a sign of a healthy tank!

 

[stevensbud]

Thanks

 

[stevensbud]

Sponge

Thanks