Identify. Does anyone know what these are?

[TheMandarin]

I have a bunch of these tiny pods all over the glass, they don't move but they have tiny tentacles that sway with water movement. They are about the size of a pin-head. These photos were taken with a 150x microscope.

 

[TheMandarin]

Sorry, I don't know why I can't edit my own threads. here is the photo.

 

[dputt88]

hydroids

they will go away

 

[downbeach]

http://www.chucksaddiction.com/hitchodds.html