EeyoreIsMySpiritAnimal
Just another girl who likes fish
Likely just corallimorphs then. I have tons and they don't bother anything.
Aiptasia??
- Thread starter corsicoreef
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EeyoreIsMySpiritAnimal
Just another girl who likes fish
Like I said, I have tons.
corsicoreef
Community Member
EeyoreIsMySpiritAnimal
Just another girl who likes fish
They stay small. They're rather hard to photograph since they thrive on the darkened undersides of rocks... I'll see what I can do tomorrow.
colourofair87
New Member
Hi Everyone! I am about 8 months into my first reef tank and I have what seems to be a pest I think is aiptasia, but I'm not entirely sure. Any help would be appreciated! 
It's been about 2 months since I introduced new corals and I made sure to dip and QT before adding to the tank so I'm not sure where these came from!
I tried to attach a video (keeps failing) because I noticed when it is loose off the rock it like pulsates through the water.
It's been about 2 months since I introduced new corals and I made sure to dip and QT before adding to the tank so I'm not sure where these came from!
I tried to attach a video (keeps failing) because I noticed when it is loose off the rock it like pulsates through the water.
EeyoreIsMySpiritAnimal
Just another girl who likes fish
dang. Looks like a plague of colonial hydroids 
colourofair87
New Member
Thank you! I have been scouring he internet trying to figure out what it looks like most so I can take the right actions steps to get rid of!dang. Looks like a plague of colonial hydroids
I loaded the video in my google drive - this is what it does when it is knocked from a rock.
EeyoreIsMySpiritAnimal
Just another girl who likes fish
That's the medusa stage.
colourofair87
New Member
That sounds horrible! Thank you so much for helping me identify this! Looks like best route is to remove the rock and get these suckers off!
Yeah, these are hydroids that are undergoing strobilation (they're about to turn from sessile polyps to swimming medusae):Hi Everyone! I am about 8 months into my first reef tank and I have what seems to be a pest I think is aiptasia, but I'm not entirely sure. Any help would be appreciated!
It's been about 2 months since I introduced new corals and I made sure to dip and QT before adding to the tank so I'm not sure where these came from!
I tried to attach a video (keeps failing) because I noticed when it is loose off the rock it like pulsates through the water.
colourofair87
New Member
Thank you so much for the confirmation. I just got done scraping and brushing every last one I could find on my rock work, then did a vac of the sand bed an partial water change. Hoping I got ahead of it before it got any worse!
colourofair87
New Member
Just wanted to share an update for anyone else struggling. The method I used of scrubbing down all the live rock, vacuuming the sand bed, and performing a partial water change has so far been effective at eradicating these the hydroids! Thank you again to everyone for the useful info on these pests!
