yellow sponge?

[monkiboy]

 

[ErinCahir]

Yup!!

 

[monkiboy]

just grew on that rock outta no where. strange. so no harm to the tank, correct?

thanks erin!

 

[little_fish]

no harm! a filter feeder!

 

[monkiboy]

great, thanks! it does look kinda neat so i'm glad!