what is this

[jba6511]

what are these things???

 

[sir_dudeguy]

scypha (AKA "pineapple") sponges. Perfectly safe filter feeders. My tanks always go through an "outbreak" of them in the beginning stages it seems...they tend to stick around in darker areas, but after a while the ones in the light seem to fade away...

hope this helps

 

[Whisperer]

You'll find them in your sump, skimmer, powerheads. They become too numerous and annoying.

 

[jba6511]

thanks

 

[magdelan]

aka tunicates

 

[bertoni]

Sponges and tunicates are very different internally. The pictures show Scypha sponges. Here's an article on tunicates:

http://www.reefkeeping.com/issues/2005-03/rs/index.php

 

[drummereef]

Yup, scypha sponges. Harmless filter feeders.

 

[Nano Chris]

Shows your tank is doing good, is what i have been told.