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Old 03-25-2009, 09:35 AM   #1
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White Hammerhead Coral- Discolouration

Hi,

I have a Brilliant White Hammerhead coral, but whilst it is growing well, it has darkened in colour to a light brown. Any ideas on why this would be or how to reverse this?

I have good lighting (2 x 250w MH), and a calcium reactor working in the system.

Thanks!
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Old 03-25-2009, 08:11 PM   #2
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How about adding actinic lighting to existing light?
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Old 03-25-2009, 08:21 PM   #3
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It is likely that your coral upon purchase was heavily bleached, i.e. without zooxanthellae, and the darkening is that of repopulation of this internal "algae" healing the coral to a natural state.
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Old 03-25-2009, 08:46 PM   #4
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As James said the problem is now while it is white. It`s bleached. It should turn brown. Here is mine which is 7 yrs old. BTW it`s called a hammer coral and not a hammerhead coral.

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Old 03-25-2009, 11:40 PM   #5
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Agree with the others. Hammer corals should NOT be white, and especially not "brilliant" white. Luckily, it sounds like it's recovering.
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