Black Sponge Good or bad?

[Magma]

picked up some live rock today and the guy pointed it out had a black sponge on it, he said he had it in his main tank for a while and it was very slow growing, is this a good sponge or bad sponge? the rock its on is about 5 lbs or so.

 

[ken rooke]

sponge

although you dont have a pic i probably have the same sponge.they are very black and yes very slow growing.when i setup my tank a while back i was poking around with a flashlight and found them in a corner with no light and a greyish white colour.so i rescaped and put them up high under t5 lamps and they are slowly expanding their region.no problem whatsoever .hth.ken

 

[Magma]

they good or bad?

 

[mr_X]

there are no bad sponges.

 

[Magma]

what do they do other than seem to cover the live rock?

 

[melosu58]

They are filter feeders. They will filter out some of the excessive nutrients.

 

[Magma]

awesome I got one thats bigger than a toonie on the new live rock I got last night from a fellow reefer.

 

[Soundtrigger]

Cool post a pic

 

[findad]

so sponges do no harm? I have one about to overtake a kenya tree, I assume it is a sponge. will it choke out corals? sorry for the picture quality.

 

[mr_X]

i don't see anything overtaking a kenya tree. are you referring to the white or the orange?
btw, you could sell the thing that kills kenya tree coral for huge money!

 

[findad]

i don't see anything overtaking a kenya tree. are you referring to the white or the orange?

the white, the orange are some random plays.

btw, you could sell the thing that kills kenya tree coral for huge money!

and get rid of the gift that keeps on giving.....

 

[Innovator]

There are bad sponges that will "choke out corals" and completely cover anything they touch. One variety is often called "chicken liver sponge" and I've seen certain white sponges spider-web across any hard surface.

 

[findad]

ok, here is a better picture, what do I have? good or bad??

 

[mr_X]

so, that is all around the base of the kenya tree? i guess good or bad depends on how you look at it.