What is this?

[cjp847]

Can anyone tell me what this is? I know I've neglected my tank a little bit. Are they bad.

 

[BigRed78]

Can you take a picture with the blue lights off

 

[cjp847]

I'm about to move to a new 125 gallon. I'm wondering if I should just start with new rock?

 

[cjp847]

Any ideas?

 

[JGT]

Any ideas?

Sponge and majano.

 

[cjp847]

Thank u!

 

[JGT]

Thank u!

Keep the sponge, ditch the majano.

 

[cjp847]

Will do

 

[vetteguy53081]

Looks more like tunicates than just sponge