What is this white stuff

[Reefer Brent]

It's surrounding my zoas and in some random areas of my rock. (Sorry my reef camera game is weak.)

My guess is sponge but I have no clue.

 

[ISpeakForTheSeas]

My guess would be a sponge too, but do you have any brighter pics, preferably under white light? It's really tough to see much of anything in the pics.

 

[Reefer Brent]

My guess would be a sponge too, but do you have any brighter pics, preferably under white light? It's really tough to see much of anything in the pics.

Off to the noopsyche ether.... Just a moment!

 

[Reefer Brent]

Blinded by the light

 

[Glenner’sreef]

It sure looks like Coral glue once its oozed and then cured under water.

 

[ISpeakForTheSeas]

Blinded by the light

Yeah, still a bit tough to say, but it looks like it's most likely a sponge:

Yeah, that's definitely a sponge. Most sponges are completely harmless/beneficial, but some can be invasive and/or harmful to corals (thankfully, these are rare).

To tell if a sponge is chemically harmful: if a healthy, established coral starts closing up or looking to be in bad shape on the side closest to the sponge as the sponge grows closer to it, and nothing else has happened (lighting changes, parameter swings, pests, etc.) that could explain it, then the sponge is probably chemically harmful.

Chemically harmful sponges are very rare.

For invasive sponges: unless it shows signs of being chemically harmful or starts actively growing over and smothering a coral's flesh/polyps, it's harmless. These can grow over the skeletons of corals, around the base/stalks of corals, even up into the water column above corals (where they're over the coral but not growing on the flesh or polyps themselves), etc. without harming the coral at all - as long as the coral flesh and polyps can get food, light, and flow, the sponge is harmless.

Invasive sponges are moderately rare.

Invasive and chemically harmful sponges are incredibly rare.

 

[Reefer Brent]

It sure looks like Coral glue once its oozed and then cured under water.

It definitely does but those have been there for months. (Even though it doesn't look like it by the lack of growth)

 

[Reefering1]

Idk why people post pictures like this and think they will get quality help. Those pictures like like a submarine sonar image or something from star trek. Turn up the white lights or shine a flashlight at it or something, act like you are asking people to see something in the deep dark blue

 

[Reefer Brent]

Idk why people post pictures like this and think they will get quality help. Those pictures like like a submarine sonar image or something from star trek. Turn up the white lights or shine a flashlight at it or something, act like you are asking people to see something in the deep dark blue

Maybe I'll get in the tank and take a selfie with it....

 

[Reefering1]

Maybe I'll get in the tank and take a selfie with it....

Sure man, just TURN ON SOME LIGHTS so we can see it!!

 

[Gumbies R Us]

I'm going to guess coral glue as well

 

[Reefer Brent]

I'm going to guess coral glue as well

Why is it growing on top of the frags all of a sudden? Does it melt or deteriorate?

 

[Reefer Brent]

Maybe I'll pull and dip them?