Sponge Bob and His Crusty Crab

[CoralNoobDude]

Hey Anyone,

Firstn I've got an issue with pineapple sponges invading my tank. I've read various articles on them and wondering if there is anything I need to do or should I just leave them be. Also...wondering if they truly are sponges.

Second, I've got this green crusty stuff growing on my tank apparatuses...can anyone identify it?

Many thanks!

 

[lapin]

Sponges good
Crusty is prob coraline algae. It seems to grow on plastic first.

 

[CoralNoobDude]

Will the crust purple up?

 

[JGT]

Coralline usually start with green. Purples usually follow shortly thereafter.

 

[Miami Reef]

Very creative title.