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Old 08/12/2017, 10:43 AM   #1
Dr RBG
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Whats growing on my rock?

This orange stuff seems to be located only on this rock. I was wondering if it might be Coraline algae, a sponge or something else. What should I do with it?

IMG_0002-2.jpg


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Old 08/12/2017, 11:04 AM   #2
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Can you describe what your seeing a little bit more? Have you tried removing it with a brush yet? I'm having a hard time getting a good look at it, but it might be Diatoms or even Cyanobacteria.

https://www.reefcleaners.org/nuisance-algae-id-guide


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Old 08/12/2017, 12:04 PM   #3
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more info

Ir almost looks like rust. It does not scrape off, It is the color of rust, I will do some chemistry tests in a minuite


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Old 08/12/2017, 12:07 PM   #4
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Has it been there for awhile or did it just show up overnight?


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Old 08/12/2017, 12:38 PM   #5
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Couple of weeks ago I noticed it. Not sure it is spreading Chemistry: Hanna Phos 0.07 ppm, dKH 11,2, API Nitrate 20 ppm


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Old 08/13/2017, 08:03 AM   #6
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any other possibilities. Should I remove the rock and do something with it?


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Old 08/14/2017, 10:38 AM   #7
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Just keep your eye on it for the time being. If there's any major changes just let us know.

Btw your Nitrates & Phosphates are a little high.

http://www.reefkeeping.com/issues/2004-05/rhf/index.htm


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Old 08/14/2017, 08:08 PM   #8
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Thanks! Do you think I should use red sea no3 po4 x or vodka to lower the nutrients?


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