white, sharp bumps on wall,

little hard white things

right now mine are to small for me to see anything coming out of the top of the hill/mound opening. I'm hoping they are barnacles, awesome pictures by the way!!

 

little hard white bumps

right now mine are to small for me to see anything coming out of the top of the little bumps opening. I'm hoping they are barnacles, awesome pictures by the way!!

 

That's cool mine are the first pic for feather dusters, Any idea why i would have so many?

Thanks
Matt

 

Good, at least we got a couple figured out LOL.
Thanks dcgray!
Matt, they wax and wane, mostly with available food in the tank. They're filter feeders. We've got quite a few right now too, along with the little pineapple sponges.

 

I just found one a little bigger and it looks like a smooth pyramid/cone shape type thing, any thoughts??

 

I have some. There prolly feather dusters and yes they can have hard outer tubes. I have hundreds of them. I can see the feathers on mine too.

 

dcgray, do they move around, like from place to place?