What is this??

[leilani908]

Hello,
What is this? I took this photo with a macro lens. It shows up all over my tank glass and then when I clean my tank, more with pop up after I just got rid of them?? I just cleaned my tank today, and found 3 new ones when I looked. Any idea what they are??

 

[James M]

They are Medusa hydroids

 

[leilani908]

W

They are Medusa hydroids

What is that?? Is it bad??

 

[LegendaryCG]

They are generally considered a pest but the ones that are on the glass usually aren't too bad. Some types can spread rapidly across your rocks and cause issues for your coral.

 

[Wolf89]

They usually go away with time

 

[leilani908]

They are generally considered a pest but the ones that are on the glass usually aren't too bad. Some types can spread rapidly across your rocks and cause issues for your coral.

Okay good. They're just annoying on the glass hahaha. I haven't seen any on my rocks just yet.

They usually go away with time

Is there any faster way to get rid of them? Or just time?