Do these things move "fuzzy little volcanoes" or just always in the same place, sound like
Scypha sponges

http://www.horta.uac.pt/species/Pori...a_tubular.html

http://www.vattenkikaren.gu.se/fakta...o/klek09e.html

http://www.habitas.org.uk/marinelife...era/scycil.htm

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If You See Me Running You Better Catch-Up
"Kelly" wrote in message news:C6FIb.881810$pl3.208687@pd7tw3no...
: I moved around some rock yesterday and found two different white things.
:
: 1) They look like fuzzy little volcanoes, really small cones with a hole in
: the center. There was one that was bigger it appears they grow wider around
: the base as they get larger, they have the look of cotton.
:
: 2) Appears to be white Coralline but I have never seen that before, does it
: exist? There are specks on the glass in the back of the tank that feel like
: coralline and don't come off too easily. I also found the same white stuff
: growing on one of the rocks back there.
:
: Since adding my power compacts I have noticed a LOT more growth over the
: last two weeks on the rock and some of the stuff I just can't find on the
: net.
:
: