What is this?

dbrown86 · Jan 30, 2023

A few days ago I was cleaning my HOB filter on my 10 gallon Nano Reef and noticed a bunch of these inside it and behind on the glass. Any idea what they are? Large Pods? They are about 1/2 inch in size.

Thanks!

Dallas

IKD · Jan 31, 2023

On the right, I would venture these are pineapple sponges (harmless filter feeders)

On the left is an asterina starfish. Mixed reviews on their reef-safeness.

dbrown86 · Jan 31, 2023

IKD said:
On the right, I would venture these are pineapple sponges (harmless filter feeders)

On the left is an asterina starfish. Mixed reviews on their reef-safeness.

Thanks !