Gray Growth on my Live Rock

[SubVet631]

I have a growth on my live rock that is spreading and looks like mold for no better discription, but under water. Is this a good algee that I should keep or something I should get out of my reef tank? Any infor and help would be welcomed!

 

[dppitone]

Hard to tell from the pics, but it's probably a kind of sponge/fungi, especially if it's in the shade or away from direct light yet growing. If so, it's good.

 

[skene]

^ Agreed. Looks like harmless sponge, a common hitchhiker on LR.

 

[SubVet631]

That would be good. I have taken a better picture and hope it is better. It is both in direct light and shaded. I like the looks of it but don't want it to get out of control.
Thanks for the help.

 

[SubVet631]

That would be good. I have taken a better picture and will try to upload it.

 

[SubVet631]

Okay it did not seem to want to post the picture so here I go again. I down sized it hoping that it was just to large.

 

[dppitone]

those are great

 

[SubVet631]

dppitone,
Thanks. I do like it but was uncertain if it was good or bad growth, it has grown a lot in a short time so I was a bit concerned it would damage other good growth.

 

[MARINECRITTERS]

Looks like fungal or bacterial gowth, sponges tend to have more structure.
Either way it is not much of an issue, it will just die off as the tank matures and nutrient levels go down.

 

[SubVet631]

Thanks all for your input!

 

[smtank]

It is a sponge, I can see Osculum.

 

[dppitone]

I get joy from diversity so most everything is good, except glass anemones. The definition of "weed" is subjective even with reefs.