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Old 09-06-2012, 02:08 PM   #1
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Can the change of flow cause a montipora to bleach out ?

Can the change of flow cause a montipora to bleach out ? Here are my last test results


Temperature: 80.1
Alkalinity, KH: 8.9
Calcium, Ca: 465
Magnesium, Mg: 1,500
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Old 09-06-2012, 07:27 PM   #2
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Lol no. Corals bleach out from light intensity. Try lowering the light brightness down if you can or move the coral down farther from the light.
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Old 09-06-2012, 10:08 PM   #3
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It could be from insufficient lighting also.
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Old 09-06-2012, 10:52 PM   #4
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It could be phosphate levels too. That coral doesn't like levels above .05 and many chemical test kits don't measure accurately down at those levels.

What kind of lighting?
Flow?
Filter?

Need more detail, bleaching is probably a lighting issue, but under certain circumstances at 80 degrees you are on the warm side of things. That higher water temperature can contribute to bleaching.
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Old 09-07-2012, 12:13 PM   #5
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I have 3 power heads in there ,
1050 x1
500 x2
It's under a 4 bulb t5 , for testing I'm using red sea and tpi. After moving it lower in the tank last night I saw white polyps coming out of the bleached part .

We've also been having more humidity than normal here in California the last couple of months and that's the coolest I can keep it with fans. At night it drops to 78 degrees.
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Old 09-07-2012, 06:46 PM   #6
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Try a chiller and it is possible from high PO4 and not enough light. nitrates should be close to 0 also. Def test for thoes.

Also lots of powerheads in a tank create lots of heat. Could be too much of a temp shift too
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Old 09-08-2012, 02:13 AM   #7
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My tank ranges from 79 to 82 with no problems. Might be something else.
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Old 09-08-2012, 12:09 PM   #8
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the bleaching has stopped spreading since i moved it lower in the tank. thanks fornthe replies , can the bleached portion ever recover?
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Old 09-08-2012, 12:28 PM   #9
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Yes. A part of my montipora bleached when I got it 2 weeks ago and it's almost completely recovered.
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Old 09-08-2012, 02:57 PM   #10
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Ihad one completely bleach thought it was dead for sure then last week after four months its started to come back

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