What's this creature is?

[robinz.alok]

Hi, can someone please help me to identify these small creatures. They are many in my aquarium and move hopping around. Are they good or bad for aquarium?

 

[wangspeed]

Hydroid. Okay as long as the population doesn't annoy you.

 

[Reefing Madness]

Phylum Cnidaria, Hydroids

 

[robinz.alok]

Thanks for the info buddy but How can I get rid of them?

 

[Reefing Madness]

[video=youtube;vnNNkZz6PPs]https://www.youtube.com/watch?v=vnNNkZz6PPs[/video]

 

[crayonbreaker]

You can also scrape them off the glass and such them out.