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Unread 06/19/2018, 03:13 PM   #1
mwalker29
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Coral declining, any ideas?

First official post here on reef central, although I have been a lurker for a long time.

I have been keeping SPS for over 3 years now and have recently started another tank, 30 gallon shallow with a 20 gallon sump.

Lights. Radion XR30w g4 pro
Flow. MP10 running at 100% random
Filtration. RO BH50
Titanium heater

Alk. 7.8
Cal. 420
Mag 1300
Nitrates 2ppm

No dosing, just weekly 10% water changes. No additives.

I have 10 frags/mini colonies in this tank. They all look great other than this one. It started off great with PE and color. After about 3 weeks in the tank it started to get really dark and PE started to lessen. Now it is dark with light spots and no PE at all. I am unsure what this is as nothing in the tank has changed since it has been in the tank. Same placement, lighting, feeding, etc.

Any ideas?


Apologies for the bad pic, I will take another tonight. The coral is darker than pictured with white areas, mostly on base but not consistent.
image1.jpg


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Unread 06/19/2018, 07:17 PM   #2
swhobbie1
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I had a bright orange monti turn very dark rust (no white spots though ) color when I moved it from under a AI-52 to a Radion XR30w g4. Both LEDs over the same tank . A couple corals became slightly darker under the Radion but not like this monti which is drastically darker . Perhaps it is similar cause


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Unread 06/20/2018, 07:43 PM   #3
Reefer40b
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You know if everything else is looking good, I would just keep it stable as possible and observe. Sometimes you can just have a real finicky one that just does not like your tank..
Do you know your phosphate level by chance?


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Unread 06/20/2018, 09:32 PM   #4
Pife
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Do you dip your coral and remove frag plugs before you put them in your tank?


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I'm not saying let's get rid of all the stupid people.* I'm just saying let's remove all the warning labels and let the problem work itself out.

Current Tank Info: 150g DT plumbed to an 80g frag tank and 220g sump in the basement. ~6-MP40s ~ 12 ATI powered t5s ~ Reefbrites and Radions supplementing ~ Custom GEO Skimmer ~ GEO CA Reactor 6x24~ Iwaki 70 Return ~
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Unread 06/21/2018, 03:22 PM   #5
mwalker29
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Phosphates are undetectable and yes dipped coral and re plugged.


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Unread 06/22/2018, 11:50 AM   #6
Tripod1404
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The fact that your alk doenst drop in a week is worrying. It means there is no uptake by corals or coraline algae.

Do you use GFO or other types of phosphate absorbing media?


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Unread 06/22/2018, 11:57 AM   #7
DivingTheWorld
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Are we talking about a tank that is 3 years old, or brand new? If you're putting these acros in your brand new tank, I would stop. It needs to get seasoned for a while before you introduce something difficult like acros.

Phosphate undetectable is also an issue. Acros need some phosphates.


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Unread 06/24/2018, 08:30 AM   #8
Deahttub
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You check the impeller on your mp10? Had one split and it caused sps to fade...


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Unread 06/24/2018, 03:43 PM   #9
rvareef
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did you quarantine for parasites?


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Unread 06/26/2018, 04:03 PM   #10
davemc1234
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Check your titanium heater pull back the rubber top and check for rust these are notorious for rusting


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Unread 07/07/2018, 05:53 AM   #11
Piper27
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That frag looks like it could have two or three red bugs on it. That would definitely. Ake it look like that.


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