Unknown Yellow "Stuff" on Rock ID??

[Whitebird1]

Some type of softy, thick, only on one rock. Found it on a rock that fell to the bottom back of my reef and it was spreading to the glass. I moved it up higher to the lights and it seemed to shrink some, the parts that were on the glass,disappeared once I moved the parent rock. I moved it back down into a low light area and its flourishing again, slowly spreading to sourounding rocks. There are small shooms and sponges on the same rock and are not botherd by it.
Its not a sponge? And a bright, allmost fluorescent yellow.
GregH

 

[onefish2fish]

my guess is sponge or yellow coraline

 

[Phyl]

Looks too thick for coraline. I'm guessing sponge.

 

[ReeferNets]

I have some too. Its a sponge and a very cool colored one as well. Its on some rocks i got from fellow reefer when he was selling his tank

 

[calaxa]

I have a reddish variety that is growing under some crevices. I always assumed it was a sponge as well.

 

[Whitebird1]

Could be a thin type sponge, not Coraline, soft not hard, check out the 2ed pic, top of the rock, you can see it spreading.
GregH

 

[onefish2fish]

you did say soft didnt you, but you also said it was not a sponge. it just looked sponge like with the "tubes" sticking out

 

[adesimone1]

I have yellow sponge and blue sponge in my system

 

[MadReefer]

I have it too and was told it's a type of sponge.

 

[ReeferNets]

you did say soft didnt you, but you also said it was not a sponge. it just looked sponge like with the "tubes" sticking out

He said "Its not a Sponge?"
;D

 

[Whitebird1]

: Well,IT COULD BE A SPONGE, thats why I ask you guys so I stay on track. Rooky Me!!
GregH

 

[jonathan.]

It almost looks like a type of tunicate with the inlets and how it's see through.

 

[NJ_ychung1]

whatever it is it's a keeper. it filter feeds and adds nice colors and best of all it don't sting.

 

[Whitebird1]

Check out the bottom right side you can see how it stands out with the yellow color. If that could be propagated to spread to the lower dark areas of the LV!
HMMMM! New project!

 

[ReeferNets]

Im 100 perecent sure its a sponge. I have the same one in my tank. I will take pictures tommorow afternoon. It does good in low light and a nutrient rich system.

 

[Whitebird1]

Cool-Sponge Bob- Ill place a piece of rubble on it and see if it spreads to it.
I do have all types of sponges growing on the lower sides of the LR but they are just kinda dull colors.
GregH

 

[Nickjr000]

It's a sponge . I have one similar but not so yellow. That's a nice one!

 

[danthemanj]

It's yellow sponge. I've had it in my system for several years