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Old 11-13-2009, 05:54 PM   #1
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Coraline Algae.

Hi! I bought a 2.5lb live rock last week, and it was COVERED with coraline algae. The color of the algae has now faded to a creamy white color. Does this mean there is something wrong with the quality of my water, or is this a common occurence?
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Old 11-13-2009, 06:05 PM   #2
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Yes. Most likely your calcium levels are down. But also could be your lighting..

http://www.aquaristsonline.com/blog/...alcium-levels/
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Old 11-13-2009, 06:14 PM   #3
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What is your calcium, alk and Magnesium numbers? I know when I add LR to the tank it will turn white but come back with a vengence.
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Old 11-13-2009, 06:17 PM   #4
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Calcium Level is 440ppm.

Lighting: 2 aqua rays 15W 18" lights, and 1 Marine Glo 15W 18" (actinic)

I do not have a test kit for mag, or alk. (I know I should, where would you sugguest I get them)
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Old 11-13-2009, 06:20 PM   #5
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Do you have a LFS around that can test it for you?
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Old 11-13-2009, 06:22 PM   #6
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Yes, I think the one down the road will do that for me. How often should I test for alk, and mag. Would it be worth buying the test kits?
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Old 11-13-2009, 06:28 PM   #7
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Yes always worth it. I use the API test kits. Get the liquid ones and not the test strips.
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Old 11-13-2009, 06:37 PM   #8
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Okay. Thank You.
JW how long does it usually take for your LR to bounce back from the white color?
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