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12/01/2009, 07:07 PM | #1 |
Moved On
Join Date: Sep 2009
Location: Chicago near UIC
Posts: 272
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Sps colony receding at base
Hi guys,
I have a problem with one of my sps colony. Last fri, I noticed a section of it was dead when I came home from being 1 week away. This section can be seen on the top left side of the colony. Now the base seems to be receding. All other 50+ sps are okay. My tank is a 75g, with 4 6045 nanostreams. Im thinking it might be a flow issue, so I pointed a stream at it. Could it be any other issues that could be causing this? Thanks Tank parameter: salinity 1.025 (refractometer) Alk - 8.3 Ca - 450 Mag 1290 |
12/09/2009, 03:53 PM | #2 |
Moved On
Join Date: Dec 2009
Location: Lake Park, FL
Posts: 121
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maybe flow or hungry critters
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12/09/2009, 07:20 PM | #3 |
Registered Member
Join Date: Dec 2008
Location: Stanley, NC
Posts: 1,933
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IME and with pocci like that as well as BOP it seems to grow too dense for the light to get to the base. I see some towards the top of your colony at the overflow though.
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12/09/2009, 08:35 PM | #4 |
Registered Member
Join Date: Nov 2009
Location: San Diego, ca
Posts: 2,732
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my birdsnest looks the same but that is due to lack of light at the bottom of the BN. Yours might be a stn issue , unless the back of that pocci is not getting light either. Did the color fade over time or just all of a sudden bleach in that area?
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12/09/2009, 08:37 PM | #5 |
Registered Member
Join Date: Dec 2005
Location: Warrensburg, Mo
Posts: 763
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Try pushing some flow down against that overflow, i bet your just not getting enough since it started filling out and shading over.
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12/10/2009, 11:36 PM | #6 |
Registered Member
Join Date: Aug 2003
Location: Dr Phillips
Posts: 1,229
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Check at night with a flashlight to see if a gorilla crab is going to town on it.Make sure to check sporadically if you see a hairy crab kill it on the spot.
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