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cobwebs?

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WaitForIt... View Drop Down
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    Posted: September 30 2016 at 8:17am
hey all.  The other day during routine inspection of the tank, i noticed on the underside of some of the rockwork that there was some white fuzz growing.  Nothing noticed on the sides exposed to the light.  Is this a chemistry issue or do i have something weird growing?

SG- 1.025
Alk- 9.2
calcium-1425
mag- 1350
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sleepingdeep Quote  Post ReplyReply Direct Link To This Post Posted: September 30 2016 at 9:30am
white fuzz is most likely a sponge of some kind. filter feeders and good for the tank. a photo would help in identifying though.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote theresawhite Quote  Post ReplyReply Direct Link To This Post Posted: September 30 2016 at 9:45am
I know we had pineapple sponges, but yeah, a pic would be helpful :-)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WaitForIt... Quote  Post ReplyReply Direct Link To This Post Posted: September 30 2016 at 9:57am
i have pineapple sponges, and i kind of like them.  What i'm seeing is more like white strands of dryer lint and cobwebs.  i'll try to get some pics tonite.
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Mark Peterson View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark Peterson Quote  Post ReplyReply Direct Link To This Post Posted: September 30 2016 at 12:55pm
It's Sponge. A wonderful beneficial animal. I've seen it hundreds of times. Below is a good pic. This pic came from a hobbyist post on wetwebmedia.com. Notice the stalked anemones in the left corner above the Sponge. They look like Duncan Coral polyps, but there is no skeleton so I believe they are Colonial Anemones. I've had them in the past, similar to but much larger than Majano. Like Majano, they can overrun a rock. Unhappy



Here is another variety of Sponge that grows quite commonly in mature tanks. These pics are mine. This same Sponge is white in the shade and turns dark green in the light. I believe that is because in the light it harbors/grows a dark green zooxanthellae algae. Coincidentally, the tank with the dark green Sponge also had Colonial Anemones of the yellow variety. Smile






Edited by Mark Peterson - September 30 2016 at 2:21pm
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Mark Peterson View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark Peterson Quote  Post ReplyReply Direct Link To This Post Posted: September 30 2016 at 12:58pm
Originally posted by WaitForIt... WaitForIt... wrote:


calcium-1425
BTW, You might want to re-check the Ca level. Smile
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