Any ideas?

[SSLVRNBLK]

Hi All,
Anyone know what this orange stuff is?

 

[Hitman]

Cyano bacteria. How’s your tank flow? What’s your nutrients level?

 

[SSLVRNBLK]

Flow seems to be pretty good. Phosphate .12 Nitrate under 5 its only on these two rocks from what I can see. I’ve had cyano on other tanks and this didn’t look the same.

 

[Coralreefer1]

I can’t get a good picture but it may be sponge.

 

[ryeguyy84]

Does it look kinda like this? The one in my tank is some kind of orange sponge

 

[Hitman]

Gets those phosphates way down. Yea possibly sponge but I’m sticking with a bacteria.

 

[SSLVRNBLK]

Yes looks like that just brighter.

 

[ryeguyy84]

Mine doesn't spread quickly but it did take out all those zoas. After about a.year.

Does yours grow quickly?

 

[jsker]

I am going with sponge

 

[SSLVRNBLK]

No doesn’t grow very fast at all.

 

[KrisReef]

If it falls apart into a slightly slimy mess when you touch it is Bacteria or slime mold But, if it stays together, crushes or breaks apart in larger ridgid chunks it is probably sponge.

 

[SSLVRNBLK]

If it’s a bacteria, should I deal with it or just leave it?

 

[KrisReef]

If it’s slimy I would siphon it out and lower feeding in the tank. I agree it appears more like sponge, and it is probably ok where it is but it may grow over coral if it is allowed to spread. I have a little bit I just keep it in check if it gets growing over something.