new reef tank - nuisance arrivals ?

[trummer]

Pretty established tank , but on a new recent water change I realized that this started in one of my rocks. On the pic, there is a crab having a quick check on it . What are these things ? Do I need to get rid of the while they are just starting ?

 

[Crabs McJones]

Welcome to R2R looks like colonial hydroids I'm afraid

 

[BeejReef]

Welcome to R2R,

 

[Billldg]

Welcome to R2R!!!

 

[dbl]

Welcome to R2R and thanks for signing up.

 

[sfin52]

I agree with @Crabs McJones

 

[Reefnman2]

Welcome to R2R!

 

[Redfoxtang]

Welcome to R2R!!!

 

[lavoisier]

Welcome to R2R

Could be a problem. Here's a thread that discusses: https://www.reef2reef.com/threads/colonial-hydroids.441987/

 

[trummer]

Welcome to R2R looks like colonial hydroids I'm afraid

OK , thanks , will do the removal on my next water change

 

[The Aquatic Arsenal]

Welcome. Do a little research, but you should be able to raise your magnesium to help out with those.

 

[P-Dub]

Welcome! I Concur with @Crabs McJones.

 

[Murica]

Welcome!!!!

 

[KJ]

Welcome to R2R!!!

 

[fishface NJ]

Welcome to R2R

 

[fuelman]

Welcome to R2R!!!

 

[Mastiffsrule]

Nice to meet you. Saw we identified them. You need any help on the eradication.

Put up some pics of your tank, if you like. We’re glad your here

 

[dwest]

Welcome!

 

[Auquanut]

Welcome to R2R! Good luck with those hydroids. If you need any help, there's a whole slew of experienced reefers here to help.

 

[lapin]

Howdy