Pineapple Sponge?...

[Scout]

I've discovered what I believe to be a pineapple sponge in my sump, and I found a few on my acans too. I found them while cleaning my chaeto. Hopefully they are these sponges and they won't harm anything. From what I've ready they're tricky to ID, but not harmful if they truly are pineapple sponges.

Pictures

 

[Tangwich]

yup..that's the correct id. usually have them in my sump and overflow.

 

[Scout]

yup..that's the correct id. usually have them in my sump and overflow.

Thanks Jesse, any idea why they'd attach to the skeleton base of my Acan?

 

[Tangwich]

Thanks Jesse, any idea why they'd attach to the skeleton base of my Acan?

only guess would be that the acan is in perfect placement with great flow and probably shaded and that's usually where they seem to love to attach themselves to filter food from the water column.

 

[pgr11]

Good filter feeders. Nothing to worry about.

 

[Scout]

only guess would be that the acan is in perfect placement with great flow and probably shaded and that's usually where they seem to love to attach themselves to filter food from the water column.

Makes perfect sense, as all of the things you mentioned were spot on. Well thanks for clarifying!
Mods go ahead and lock 'er up.