Found this is it sponge or worm

[reefhobbiest]

I’ve had a couple of these I don’t know what they are but it looks like there not bothering anything there just unsightly
It’s long white and stringy almost impossible to see it looks like a worm but I can’t find it when I look up worms and so I’m thinking it might be a sponge or who knows what

 

[Tahoe61]

I can't see a thing. Circle unknown and turn off blue lighting if able.

:)

 

[reefhobbiest]

Picture 2 without blue lights there not bothering anything but there an eye sore

 

[Tahoe61]

Hydroids

 

[reefhobbiest]

Hydroids

hydroids?…. So there not worms or sponges lol dang hahaha ok so how do I get rid of em and are they bad so far no problems but yea

 

[Tahoe61]

hydroids?…. So there not worms or sponges lol dang hahaha ok so how do I get rid of em and are they bad so far no problems but yea

Those are Digitate Hydroids in post #3.

 

[ISpeakForTheSeas]

hydroids?…. So there not worms or sponges lol dang hahaha ok so how do I get rid of em and are they bad so far no problems but yea

Those are Zancleid/Digitate Hydroids; in theory, they should be good for the corals they're on (they may potentially sting other critters, but I don't recall hearing of any issues with them so far):

Not sure on the black dots (probably a pod of some variety, but microscope pics would be needed to say for sure). For the string though:

Those are Digitate Hydroids (definitely a Zancleid hydroid [taxonomic family Zancleidae], possibly a Zanclea sp.) - there's evidence to suggest that they're actually beneficial to the corals they grow on;* I don't know if they'd sting fish that get too close or not, but it is a risk - similarly, they may spread and cause issues by growing too numerous in the tank and possibly posing a risk to other tank inhabitants.

I know @Reefkeepers Archive had a colony of these - I don't know if they've caused any problems for them or not, but if they still have the colony, they'd have ~5 months of experience with them to relate.

*Source:
https://www.researchgate.net/public...are_less_susceptible_to_predation_and_disease

It's generally suggested to get rid of hydroids, as they (like many corals) have stings - if the species has a potent enough sting, it can cause problems for you and your tank inhabitants.

There are a few species (like at least some of the Zancleid species mentioned above) that seem potentially harmless/worth keeping, but many are problematic, so removal at this point is the safer option.

 

[reefhobbiest]

Those are Digitate Hydroids in post #3.

How can I get rid of them tho they make the tank look bad

 

[reefhobbiest]

Those are Zancleid/Digitate Hydroids; in theory, they should be good for the corals they're on (they may potentially sting other critters, but I don't recall hearing of any issues with them so far):

Are they harmful to fish they look bad kinda I’m trying to get rid of em

 

[JoJosReef]

They usually go away over time. My last tank had an explosion of them and then none.

 

[ISpeakForTheSeas]

Are they harmful to fish they look bad kinda I’m trying to get rid of em

I haven't heard of them causing any issues (they're actually helpful to corals in the wild), but they might potentially be able to sting fish (fish generally know better than to get stung by things like that though).

If they can find enough food to eat (like Baby Brine Shrimp/Artemia nauplii, copepods, rotifers, etc.), then they may reproduce and produce medusae (basically hydroid jellyfish that when mature reproduce and produce more polyps like you currently have), but otherwise, they'll likely disappear on their own.

 

[reefhobbiest]

They usually go away over time. My last tank had an explosion of them and then none.

How long and did you have anything in the tank that helped there disappearing act.

 

[dlemonz]

I haven't heard of them causing any issues (they're actually helpful to corals in the wild), but they might potentially be able to sting fish (fish generally know better than to get stung by things like that though).

If they can find enough food to eat (like Baby Brine Shrimp/Artemia nauplii, copepods, rotifers, etc.), then they may reproduce and produce medusae (basically hydroid jellyfish that when mature reproduce and produce more polyps like you currently have), but otherwise, they'll likely disappear on their own.

Where did you hear that digitate hydroids are helpful to coral? I have some right now and can’t tell if should just let it be or try to intervene