fishie

Is it a form of red slime? I am battling some on my sand right now and I just noticed these growths on my rock.

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75 gal w/ live sand and lotsa live rock
1 green chromis * 1 firefish * mushrooms * yellow polyps
** 14 gal biocube**
ocellaris clownfish * Hi Fin Red Banded Goby * bulb anemone * 1 firefish * shrimp goby * corals

Judge

That does not look like CB to me. It looks a little too definite in shape (if that makes sense). The CB that I have experienced appears more to be a "dusting" on stuff that really has no specific shape. So to answer your question, well I have no idea what it is but I don't think it's CB. Sorry. Maybe some sort of sponge...

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55g SW
Marineland Magnum 350, #3 Koralia, #4 Koralia, Aqua C remora, Odyssea 260W/12K/8 lunar.
40 lbs. CC/65 lbs.LR/40 lbs. LS
5 Blue Green Chromis, Lawnmower Blenny, Serpent Star, Hairy shroom, Red Shrooms, Purple Shrooms, Orange Ricordea, Neon Green Ricordea, Frogspawn, Dragon Eyes, 2 peppermint shrimp, 6 Pin Cushion Urchins, 1 Pulsing Xenia, Green Star Polyps, Mexican Turbos.
75g FW

http://www.aquarank.com/in.php?id=FTF1
http://webfish.top-site-list.com/vote68.html

fishie

I'd rather have it be a sponge!

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75 gal w/ live sand and lotsa live rock
1 green chromis * 1 firefish * mushrooms * yellow polyps
** 14 gal biocube**
ocellaris clownfish * Hi Fin Red Banded Goby * bulb anemone * 1 firefish * shrimp goby * corals

chadf

Maybe it's a type of bubble algeae, not sure though.

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My 90 gallon reef

Striped bristletooth tang, Coral beauty angelfish, Royal gramma, 2 Occelleris clownfish, Lyretail anthias, Tongue coral, Green frogspawn, Palythoa colony, Orange and green ricordeas, Green striped mushrooms, Crocea clam, About 40 snails of 11 different species, Sand sifting starfish, Emerald crab, 130 lbs live rock, 240 lbs live sand