What is this?

[Rick Swatloski]

Tank has been set up for almost 3 months now. Any idea what this is? I just noticed them tonight.

Thanks

 

[Crabs McJones]

Hydroid. They tend to go away on their own

 

[Rick Swatloski]

Thanks. Will they cause any issues with Zoas?

 

[vetteguy53081]

You can inject kalk paste on them to end their life but they are harmless but do steal nutrients from tank for survival.

 

[Rick Swatloski]

Thanks!