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Old 03-29-2007, 11:42 AM   #1
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Weird white crust

I have a really weird white looking crust appearing on my live rock. Is this white coralline algae?
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Old 03-29-2007, 11:46 AM   #2
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Can you get a pic? Sounds like it could be an encrusting sponge, it is growing on the top or bottom? It's hard to guess with no pic.
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Old 03-29-2007, 11:56 AM   #3
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Getting a pic will be difficult as the only camera i have is a very poor camera phone. It is a very hard material and it is growing on top of the rock. On another piece of rock a similar one is growing except this one is white with a pink hue.
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Old 03-29-2007, 01:55 PM   #4
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Quote:
Originally Posted by roka64
Can you get a pic? Sounds like it could be an encrusting sponge, it is growing on the top or bottom? It's hard to guess with no pic.
how long has your tank been up?
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Old 03-29-2007, 02:22 PM   #5
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I started curing live rock for about a week now. I only noticed it since the nitrites in the tank started to come down and the water cleared up.
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Old 03-29-2007, 06:30 PM   #6
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Ok..I'm going to say it is what was coraline algae. When it is exposed to air for a period of time it dies and bleaches or turns white. Given time and the right lighting it will grow back.
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Old 03-29-2007, 06:52 PM   #7
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Quote:
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Ok..I'm going to say it is what was coraline algae. When it is exposed to air for a period of time it dies and bleaches or turns white. Given time and the right lighting it will grow back.
Good point, was the rock colorful before, or are you using base rock?
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Old 03-29-2007, 07:50 PM   #8
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It was live rock which was an ugly greyish color. (edit)It had an awful smell too.
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Old 03-30-2007, 01:54 AM   #9
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Does it blow off? If not I'd agree, it sounds like bleached/dead coralline algae. Usually it will come back after cycling, w/ proper care and light. It tends to grow back/cover areas of rock that were once already covered, and other relatively smooth surfaces, fastest.
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Old 03-30-2007, 12:23 PM   #10
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I thought it would come off but when i touched it , it was a smooth material.
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