Little white swirls

[Nardi]

Does anybody know what these are? I don't believe they're snail eggs as they aren't too clustered. They seem to be growing only in shaded areas.

 

[Reefkeepers Archive]

Spirorbid worms, harmless/beneficial filter-feeders but as you've noticed they spread rather quickly

 

[Nardi]

Spirorbid worms, harmless/beneficial filter-feeders but as you've noticed they spread rather quickly

Ah I see, thank you. Do they harm coral? I've noticed they've started to grow on top of my GSP and Favias skeleton.

 

[Reefkeepers Archive]

Ah I see, thank you. Do they harm coral? I've noticed they've started to grow on top of my GSP and Favias skeleton.

No, they should be harmless.

 

[krollins]

I wish I had spirorbid worms in my tank.

 

[Nardi]

I wish I had spirorbid worms in my tank.

Really? For more filter feeders?
I also have a sponge that I can't seem to get rid of that grows like a week and took over half my GSP before I trimmed it.

 

[krollins]

Really? For more filter feeders?
I also have a sponge that I can't seem to get rid of that grows like a week and took over half my GSP before I trimmed it.

I don't have any filter feeders.

 

[sushi_and_sashimi]

I have these all over my quarantine tank and am hoping I can scrap them from the shells of my snails with a dental pick and sand paper. I do not want these in my tank. It came in on an emerald crab I ordered from Live Aquaria and was so bad it wasn't able to molt and eventually died. At least I'm pretty sure that's what happened. I tried so hard to fatten him up with bits of fish etc., to get it to molt but no dice. (4 months)

 

[EeyoreIsMySpiritAnimal]

I have these all over my quarantine tank and am hoping I can scrap them from the shells of my snails with a dental pick and sand paper. I do not want these in my tank. It came in on an emerald crab I ordered from Live Aquaria and was so bad it wasn't able to molt and eventually died. At least I'm pretty sure that's what happened. I tried so hard to fatten him up with bits of fish etc., to get it to molt but no dice. (4 months)

I doubt that's why the crab died

 

[Reefkeepers Archive]

I have these all over my quarantine tank and am hoping I can scrap them from the shells of my snails with a dental pick and sand paper. I do not want these in my tank. It came in on an emerald crab I ordered from Live Aquaria and was so bad it wasn't able to molt and eventually died. At least I'm pretty sure that's what happened. I tried so hard to fatten him up with bits of fish etc., to get it to molt but no dice. (4 months)

Highly unlikely that they caused the death of your crab. They're completely harmless, sometimes crabs will just have a bad molt.

 

[sushi_and_sashimi]

I doubt that's why the crab died

Well you may be right but it was completely encrusted in them. You could see a bit of green on it's legs but that's it. It wasn't a bad molt there was no molt.

 

[EeyoreIsMySpiritAnimal]

Well you may be right but it was completely encrusted in them. You could see a bit of green on it's legs but that's it. It wasn't a bad molt there was no molt.

I never said bad molt.
But having stuff on the shell won't kill a crab or interfere with molting. Probably just an old crab.