What is this?

trinityh13

New Member
View Badges
Joined
Oct 4, 2024
Messages
7
Reaction score
0
Location
bakersfield
Rating - 0%
0   0   0
What are these? They are all over my dad’s tank but I wasn’t fully sure what they are, are they good or are they bad?
IMG_5958.jpeg
 
OP
OP
T

trinityh13

New Member
View Badges
Joined
Oct 4, 2024
Messages
7
Reaction score
0
Location
bakersfield
Rating - 0%
0   0   0
What are these? They are all over my dad’s tank but I wasn’t fully sure what they are, are they good or are they bad?
IMG_5958.jpeg
I’m guessing hydroids? They have been in the tank for a little bit apparently but never have gotten bigger than in the picture. If unwanted how do you get rid of them?
 

IKD

2500 Club Member
View Badges
Joined
Dec 13, 2015
Messages
3,325
Reaction score
4,728
Location
Orlando Area
Rating - 100%
2   0   0
Generally a pest as they spread easily. And they stink to high heaven out of water. I generally hand-picked them with tweezers for small amounts but may want to pull the rock and dry out with the quantity you have.
 

ISpeakForTheSeas

7500 Club Member
View Badges
Joined
Nov 22, 2021
Messages
8,450
Reaction score
10,304
Location
United States
Rating - 0%
0   0   0
they're either colonial hydroids or Nausithoid jellyfish polyps (probably from the Nausithoe genus):
to my knowledge, they're not invasive (or at least not always), but they reportedly do have a nasty sting for some people
For removal ideas:
No personal experience with removal, but this is what I've heard on removing them (keep in mind there a lot of different species of hydroids, and some may respond to one treatment while another may not):
I've heard smothering the hydroids with kalk paste may work, but here are some other threads with suggestions that might be helpful:
Edit: A relevant link in post 7 of the link above:
 
Back
Top