What are these

darnoc23

New Member
View Badges
Joined
Sep 7, 2020
Messages
18
Reaction score
3
Review score
+0 /0 /-0
Location
california
Anyone know what these things are? At first I thought they were aiptasia, so I got nudribrachs but they didn't even touch them. When I took out the rock, they are in small hard tubes. They started out in one rock, but I'm starting to see them propogate into other unconnected rocks. What are these and how do I get rid of them? I feel like they're going to be taking over soon.

20210616_121022c.jpg
 
Corals.com

tbrown3589

Valuable Member
View Badges
Joined
Nov 22, 2019
Messages
2,408
Reaction score
2,541
Review score
+0 /0 /-0
Location
Peoria, AZ
Anyone know what these things are? At first I thought they were aiptasia, so I got nudribrachs but they didn't even touch them. When I took out the rock, they are in small hard tubes. They started out in one rock, but I'm starting to see them propogate into other unconnected rocks. What are these and how do I get rid of them? I feel like they're going to be taking over soon.

20210616_121022c.jpg
Those are colonial Hydroids it looks like.
 

vetteguy53081

Well known Member and monster tank lover
View Badges
Joined
Aug 11, 2013
Messages
47,078
Reaction score
107,387
Review score
+0 /0 /-0
Location
Wisconsin-Florida in a year
Although representative,of hydroids, these may also be yellow polyp coral (below)

1623879475921.png
1623879483743.png
 
Avast

tehmadreefer

2500 Club Member
View Badges
Joined
Oct 3, 2018
Messages
3,492
Reaction score
4,479
Review score
+0 /0 /-0
Take out rock and bleach it m, rinse it well dry in sun and put back in. Otherwise you will never be rid of them.
 

jurgenph

Well-Known Member
View Badges
Joined
Jul 9, 2018
Messages
602
Reaction score
671
Review score
+0 /0 /-0
colonial hydroid... these things are a pain in the butt.
i fought them for many months, with putty, tweezers, and a blowtorch.

they have a free swimming jellyfish-like stage, that's how they spread.

good luck!

J.
 
RAP

TnFishwater98

Well-Known Member
View Badges
Joined
Nov 7, 2017
Messages
746
Reaction score
1,027
Review score
+0 /0 /-0
Location
Nashville TN
Anyone know what these things are? At first I thought they were aiptasia, so I got nudribrachs but they didn't even touch them. When I took out the rock, they are in small hard tubes. They started out in one rock, but I'm starting to see them propogate into other unconnected rocks. What are these and how do I get rid of them? I feel like they're going to be taking over soon.

20210616_121022c.jpg
Where did you get your LR?
 

TnFishwater98

Well-Known Member
View Badges
Joined
Nov 7, 2017
Messages
746
Reaction score
1,027
Review score
+0 /0 /-0
Location
Nashville TN
gloves are always a good move, any specific reason tho?
They are related to the jellyfish so I’m guessing they could sting you. Just saw this online for possible natural predators that would eat them.

-The lynx nudibranch (Phidiana lynceus) - Only eats hydroids, especially fond of Myrionema amboinense.
-Pterolidia Ianthina - sea slug that feeds soley on hydroids
-Sea Urchin Salmacis bicolor- Good eater of Myrionema. but very slow & can not get into the pores of the rocks where roots are.
-Diadema setosum (Sea Urchin) - Good eater of Myrionema. but very slow & can not get into the pores of the rocks where roots are. Will also eat sps corals
-Flameback Angelfish (Centropyge acanthops and Centropyge loriculus) - Hit & Miss and will occasionally nip at your corals especially your sps and some polyp corals.
-Dolabella auricolaria - sea hare
 

Mibu

Valuable Member
View Badges
Joined
Oct 17, 2020
Messages
2,212
Reaction score
2,576
Review score
+0 /0 /-0
Location
Illinios
gloves are always a good move, any specific reason tho?
They can sting, but if you have any cuts on your hands. It makes it a lot easier for them.
As with all venom. You never know how your body will react. May not have any issues. Or, mild discomfort and swelling. Up to you though.
 
OP
D

darnoc23

New Member
View Badges
Joined
Sep 7, 2020
Messages
18
Reaction score
3
Review score
+0 /0 /-0
Location
california
Live Rock
Ah, like I said I'm a newbie. I actually got it from a fellow reefer here. Coral I purchased was attached to a small rock. I dipped it in CoralRx, thought nothing of it since it was only a few polyps then. Now they've grown into a colony and spreading to my other rocks.
 

TnFishwater98

Well-Known Member
View Badges
Joined
Nov 7, 2017
Messages
746
Reaction score
1,027
Review score
+0 /0 /-0
Location
Nashville TN
Always fun to see a hitchhiker deep down you always want to keep it. That’s why I have a 10 gallon I call my “Observing Tank”..It’s not really a QT because I know somethings I put in there I don’t plan on ever taking out.
 

What's the main reason you take on DIY reefing projects?

  • Save Money

    Votes: 102 33.9%
  • You Like To Make Things

    Votes: 107 35.5%
  • Necessity, you want it a certain way

    Votes: 76 25.2%
  • Time, you need it quick

    Votes: 5 1.7%
  • Other (please explain)

    Votes: 11 3.7%
Top