Need identification

[Tangdora]

Hi

Anyone and idea of what these greenish yellow lumps are that are starting g to develope across my rock work.

Thanks.

 

[JTP424]

Looks like a sponge of some sort!

 

[tzabor10]

Looks like a sponge. The pictures don’t have much resolution. Your post title could be a bit clearer

 

[Gumbies R Us]

Sponges! How old is your tank?

 

[Tangdora]

Sponges! How old is your tank?

15 months

 

[Science/G]

sponge or tunicate

 

[Tangdora]

Looks like a sponge. The pictures don’t have much resolution. Your post title could be a bit clearer

A slightly better resolution

 

[Tahoe61]

Cool Sponges.

 

[tzabor10]

Those rock! I dose Brightwell SpongExcel to keep up a sponge and tunicate population. Many survivors after 1year. Mine was from @LiverockRocks. Where are those rocks from? Certainly not Dr Tim’s.